SWITCH HEADLIGHT B N SWITCH N P N B G 1 N G Y 6 TACHOMETER P B GR B CONTROL (GR) Yellow 4 GN & SWITCH Sign up for e-news. NR Pink WG U B W ON - OFF SWITCH P Blue WASHER MOTOR GK NY N BELT INTERLOCK SYSTEM R W Y U GAUGE & DASH STARTER SWITCH FLASHER Red TACHOMETER G W (U) 1 This should be around 7v.If nothing the problem is probably with the ballast resistor. 7 RG G FUEL PUMP B G G 2 R GR 8 YP B P RH REAR GP IGNITION UR R 3 G G HEADLIGHT SWITCH B RW component they are connected to. (GW) G B B RW ALTERNATOR 2 FUEL LEVEL 2 N BATTERIES I Wire colors shown in ( ) are supplied as part of the W B HORNS GN RW B Purple YP G B P B GAUGE VOLTAGE Pink G Pink NOT USED - LEFT OVER FROM G N B CIGAR GN 1 STARTER PW 10 Yellow GR 3 PB GN W WIPER/WASHER 2 PW B P STARTER ALTERNATOR RW P GR GO ILLUMINATION LAMPS Purple TACHOMETER GAUGE VOLTAGE RW NY 6 RW STARTER (U/LG) WB A dmp PUBLICATION 2005 REAR WINDOW DEFROSTER Left - ILLUMINATION LAMPS W G YR FLASHER component they are connected to. LG/N B LIGHTER B GN B TACHOMETER W B GP RG REVERSE LIGHTS & SWITCH P G WR N STABILIZER B P K FRONT PARKING & R W N ALTERNATOR WARNING 6 TURN SIGNAL Wire colors shown in ( ) are supplied as part of the GAUGE & DASH G HAZARD SWITCH B MODULE N N GW A useful resource showing wiring diagrams across all the years of mgb manufacture. Right Left GN PB WATER TEMPERATURE GN WN (R/LG) HIGH BEAM INDICATOR 4 R RW P OVERDRIVE LG Light Green A dmp PUBLICATION 2005 Right G G TURN SIGNAL G P G HIGH BEAMS G INDICATOR RW B G 1 PW CONNECTION PG Right I P LAMP & SWITCH W PG 5 R Newer Post Older Post Home. B RELAY HAZARD SWITCH GP UW WB N Yellow REVERSE SWITCH F LG Light Green 3 DIMMER & LAMP LG/N LG/G LIGHTER GN GW N RW REAR WINDOW DEFROSTER CONTROL COLOR CODES RH TS (UW) G G Y GR GW GP WB B BATTERIES P BUTTON green N DISTRIBUTOR (S) (WR) P B LH REAR W (WG) DIMMER & B UW B LAMP & SWITCH G B SOLENOID RW FUEL GAUGE & SENDER GW W B S FLASH-TO-PASS Orange R HAZARD S GB RW G TURN SIGNAL FRONT PARKING CIGAR LIGHTER O Yellow INDUCTION WB N WR G HIGH BEAM INDICATOR G - PB W Right RG BUTTON = one pin of a multi pin connector. Roadster B L (U/LG) N RW RW SWITCH SWITCH G B R 3 4 fuse replacement 77 MGB I have blown a couple of fuses while doing some rewiring. G P Blue BUTTON LG/N K N TRUNK/HATCH B PB 1 P 1 ILLUMINATION LAMPS W G RG * indicates two switches combined in one housing B INTERLOCK SWITCH B R U WN PW SEATBELT BUCKLE & SWITCH G WIPER MOTOR N REVERSE LIGHTS HAZARD P SWITCH U/LG W/LG HEADLIGHT STARTER green & TEST SWITCH 2 SOLENOID N LG/N NG INTERLOCK SWITCH TURN SIGNAL * DIMMER & 2 OVERDRIVE B RW N B WR COIL 1 WB REAR WINDOW DEFROSTER HEADLIGHT W R R L COLOR CODES GB ON - OFF SWITCH YO (WG) N RH REAR GP 1 8 3 Ind DIMMER - CIGAR LIGHTER B INDICATOR HEATER CONTROL LICENSE PLATE LAMPS GW HAZARD TACHOMETER R TRANSMISSION P TEMP GAUGE & SENDER LICENSE PLATE LAMPS G The site costs me over $1,000 per month keep online and is totally reliant W B R 8 (U/LG) (LG/N) sheet 30 HEATER FAN PSNGR REAR WINDOW GR TACHOMETER TRANSMISSION HIGH BEAM INDICATOR (GW) `Fuse box connections and colours for MGB GT 1972 . B SWITCH RH FRONT B N 5 W HEATER FAN MOTOR sheet 7 GP OVERDRIVE HEATER FAN PK B Wire colors shown in ( ) are supplied as part of the SEATBELT BUCKLE 2 CONTROL SWITCH LIGHTER RG sheet 3 UW G 2 B S G BW I opened the hood (bonnet) and saw that the wire running across the engine had hit a 6 N GW G PB DIMMER REVERSE LIGHTS R TEMP GAUGE & SENDER N PW RG GK R/LG GN RH TS STABILIZER B 8 G Pink OVERDRIVE FUEL GAUGE & SENDER RG P REVERSE LIGHTS B 4 B INDICATOR W B G 2 2 W Black GAUGE R G GK OVERDRIVE SWITCH LOW BEAMS LAMP R GN U B G STARTER CIGAR LIGHTER B R OVERDRIVE N + NP W G REGULATOR B PG F Ind 1 1 5 R component they are connected to. HEADLIGHT SWITCH HEATER CONTROL W UR COURTESY LAMP RN G SWITCH CONTROL GN 1 P HAZARD R 1974 - 1975 MODELS WITH SEAT DISTRIBUTOR GN FUEL LEVEL STARTER G G B Purple PK (N/LG) Green Web 1977 mg mgb wiring diagrams the insulated live lead from the battery tends not to suffer from corrosion as much as the earth lead does,. Right BG WN N R Black UW RW N SWITCH B SWITCH LG/N GR A dmp PUBLICATION 2005 C2 W2 UW SWITCH PB * indicates two switches combined in one housing B GAGE & SENDER TAIL LIGHTS & R TURN SIGNAL WB Right UR INDICATOR B N RW HORN PG 1 GW RW R R WG G COURTESY LAMP LG/N 1 PW Orange LAMP R W W 1 WG B (GW) PW N RW UW 7 A dmp PUBLICATION 2005 PW REAR WINDOW DEFROSTER LOW BEAMS GK WR HAZARD FUEL GAUGE & SENDER N G W component they are connected to. B OIL PRESSURE/WATER TEMPERATURE 6 B GR green TRUNK LAMP P 1 P P CONTROL BATTERIES (U) C1 (GR) R C2 O (G/K) N (N/LG) NY 5 RG Red R NW P B Web 1978 mgb engine wiring harness. RW LH FRONT LOW BEAMS REAR WINDOW DEFROSTER G B PB & SWITCH C2 ANTI RUN-ON Orange STABILIZER (GR) STARTER LAMP green 4 G R N REAR WINDOW DEFROSTER B PW Black B 2 (U/LG) N B PB S FUEL GAUGE & SENDER LICENSE PLATE LAMPS YU G HIGH BEAMS Get your hands on the complete mg factory workshop software 9. 3 P GK SPEEDOMETER P B 3 INDICATOR W 4 G WR PB SOLENOID REAR WINDOW DEFROSTER SWITCH GU HEATER FAN MOTOR N WR BATTERY HORNS C1 C2 GP RW SWITCH G (B) N R G B P ALTERNATOR W Y WB UR R BRAKE SWITCH CONNECTION RW B RADIO N R 5 Slate W B B UR HAZARD GK P CIGAR LIGHTER HEATER FAN & SWITCH = one pin of a multi pin connector. N/LG B R PB UW OIL PRESSURE/WATER TEMPERATURE SWITCH SWITCH B Red Purple (U) N sheet 12 FRONT PARKING & G W/LG (GW) Green B RELAY REAR WINDOW DEFROSTER LICENSE PLATE LAMPS + B+ B G B OVERDRIVE B PW B WG R WLG UW Turn the ignition on, and the fans should start. OVERDRIVE RN WIPER LH TS SWITCH UW P GU FUEL PUMP R RG R/LG B B UW 4 OVERDRIVE S *TS SWITCH G O LH REAR N 11 INTERLOCK SWITCH HORNS 1 N/LG CONNECTION LG/N W N HAND BRAKE IGNITION (GR) N P Ind Ind W ON - OFF SWITCH INTERLOCK SWITCH IGNITION 1 RW G W R R LG Light Green YP DIMMER TURN SIGNAL P ON - OFF SWITCH Y BRAKE FAILURE G LG Light Green UW 4 B W LAMP BW B INDUCTION OIL PRESSURE ALTERNATOR BATTERIES (GW) B GW OIL PRESSURE K FROM BENTLEY B51798 1 R & SWITCH GK SWITCH WB R GB NY G P U/LG B LIGHTER S SWITCH B UW UR LG/G LH FRONT (GW) A dmp PUBLICATION 2005 PW 2 GR G GP 3 R GP PW mods I do on my own MGB. hope you find them useful. P B G W W2 W1 (GW) G FUEL GAUGE & SENDER B N GN UR VALVE & SWITCH Yellow GR LAMP 2 P ILLUMINATION LAMPS TACHOMETER 3 green UW (UR) RW B W G B R STARTER R LG/B YR N Wire colors shown in ( ) are supplied as part of the WN LG/P YU ON - OFF SWITCH WR B B L B Some of the wires I upgraded N/LG DIAGRAM 12 - 71/72 MGB PW 3 HEATER CONTROL RW SWITCH P GP G STABILIZER HIGH BEAMS GR 1 W RW GP G B+ N R GR B component they are connected to. 1 SWITCH BATTERIES W RG P HAZARD P RG LG/N G Left TACHOMETER Right GR HAZARD GW Brown 6 U/LG + + N HEATER FAN & SWITCH B B B Ind (GR) Left P HAZARD HIGH BEAM INDICATOR RW INDICATOR R RW RH REAR R P green SOLENOID N GN GP W W 8 W P G Ind GN NW WG SWITCH BRAKE FAILURE RW P + B Yellow GN HEATER FAN W Y W GW CONTROL + N 7 TEMP GAUGE & SENDER TACHOMETER N W P HIGH BEAM INDICATOR NP Green GK W1 C2 UW INERTIA FUEL PUMP WR N N B OVERDRIVE N G (LG/B) W G W White Y N/LG B DIAGRAM 13 - 71/72 MGB SWITCH C2 3 LIGHT/SWITCH G SWITCH & LAMP GT Y COUNTER & LAMP 1 3 WG GW R G WIPER MOTOR GR P W W White Red GP O GW B N UW GW Purple LOW BEAMS W = one pin of a multi pin connector. UW GP U WR 3 FLASHER GP 6 N/LG sheet 26 B PW G G B G N G WB FUEL PUMP BRAKE SWITCH R P TRUNK OR HATCH COIL RW SWITCH P GY P 2 Right DIMMER & *TS SWITCH Blue (S) W1 SOLENOID PW FUSE BOX TURN SIGNAL W 2 B P BG Y LOW BEAMS W STARTER W White BELT INTERLOCK SYSTEM GW 4 + Fuse Blocks. 3 WU RW YP N WR SWITCH FROM BENTLEY E2764W UR R B UW U/LG WN B N Right . FROM BENTLEY 3NB067 LICENSE PLATE LAMPS WB RESISTOR (WG) HEATER CONTROL R RW B WR B B W R WN TACHOMETER MGBGTV8 G TAIL, REAR MARKER, & *These two switches are combined in one housing 1 W Left WN PSNGR STABILIZER RADIO SWITCH G NW 1 Note that we kept the wiring very neat and gave the bends and routing a factory look. W INDICATOR In the MGB 70/71 wiring diagrams the purple is used as a feed wire from the fusebox . R 5 (GR) B B B I W1 green B UW TRANSMISSION Enter your email address to follow this website and receive notifications of new posts by email. 6 Red GK GP G SWITCH G Ind Ind R B 5 1 R & SWITCH UW green BUTTON WLG LG/P GW G + R R 2 R 2 (GW) DIAGRAM 8 - 68/69 MGB GR REVERSE LIGHTS P GP B R LAMP VALVE & SWITCH DIMMER & PB B WIPER MOTOR GENERATOR WARNING LAMP SP GP GAUGE VOLTAGE R CIGAR O UR + B LH TS U 1 BG - GW DIMMER & + WIPER MOTOR GR B G BRAKE SWITCH GK * and indicate two switches combined in one housing HEATER FAN RW WR R FLASH-TO-PASS (B) 3 LG/P B GR RW R P sheet 2 (W) HEATER G G SEATBELT SWITCH (N) (PK) REVERSE LIGHTS LG/N B LG/P W TRUNK/HATCH W TAIL, REAR MARKER, & Brown TRANSMISSION & DOOR SWITCHES 3 DIMMER 8 FUEL LEVEL GR N ILLUMINATION LAMPS B Blue R/LG R R B Orange - NP BRAKE SWITCH + G GW R FLASHER RN R (N) (PK) GO UR DISTRIBUTOR P HAZARD 3 2 From the 1977 / 1978 maintenance manual suppliment . YN B 4 N W YK SEATBELT W B Ind 4 + SY 6 FLASH-TO-PASS WB P B GK 1 B R & SWITCH - GT ONLY UW Y Blue 4 W1 GW COLOR CODES 7 GN W NP W I UW FLASH-TO-PASS 8 LG/G + Left W GR GAUGE RW NY G BRAKE FAILURE B B N N G HIGH BEAMS NR R U RW SWITCH G 4 RG RELAY P N N HEATER CONTROL RW UW LG/G N B Right WN B 2 FUEL LEVEL B 4 OIL PRESSURE/WATER TEMPERATURE P UR GP REVERSE LIGHTS FROM BENTLEY E2333W RW YG RW GR N R N G N 1 FRONT PARKING SWITCH RG BUTTON 4 Y HEADLIGHT RW (LG/N) INTERLOCK SWITCH RW (P) All the auto parts shops in the area do not carry british type. B FUEL PUMP 6 FUEL GAUGE & SENDER B RELAY G B WARNING FROM LATE BENTLEY (UW) P GR R G sheet 29 PK N B OIL PRESSURE COLOR CODES B (GR) WB GB B W1 P U/LG B GW RW Orange U (UW) STARTER PW GT HEATER B B (P) PB RADIO B 3 UR GW (R/LG) K GP LICENSE PLATE LAMPS G UW + B & LAMP GN HEATER FAN GP & INDICATOR LAMP - GT ONLY B R RG ILLUMINATION LAMPS W GO R SPEEDOMETER R GK N GR 5 RW 5 B BATTERY 5 Orange (R/LG) 5 SWITCH B LG/B B SIDE MARKERS B LG Light Green & DOOR SWITCHES B 1977 Mgb Fuse Box Wiring - Wiring Diagram Schemas wiringschemas.blogspot.com thunderbird Ford Xr6 Fuse Box Diagram - Wiring Diagram cars-trucks24.blogspot.com fuse diagram xr6 relay seriesii Ford Thunderbird Questions - Need Fuse Box Diagram For A 1988 Ford www.cargurus.com EGR SERVICE 2 TURN SIGNAL R (W) Wire colors shown in ( ) are supplied as part of the B R G UW GT N W 1 R 1 BRAKE SWITCH RW (LG/B) (LG/N) P FANS N W1 B G B 75/76 UK MARKET MGB 4 GN RW UW MARKER LIGHTS YP W PW STARTER NY W GP *HORN RW (U) P GN G GR 4 B GP PB PW R W N G R G 3 PW GW B U B RW 3 COURTESY LAMP N B MARKER LIGHTS B B GK It is about 3mb in size. WG W B HAND BRAKE * N Y PB & SWITCH GW R/LG BUTTON GY (G/K) FLASH-TO-PASS R WIPER (LG/B) P ILLUMINATION LAMPS HEATER FAN MOTOR A dmp PUBLICATION 2005 Purple B COURTESY/MAP R R 7 COLOR CODES INDICATOR W GK GK SWITCH OVERDRIVE R HORN (UW) & SWITCH - GT ONLY W A dmp PUBLICATION 2005 B BRAKE WB RG TEMP GAUGE & SENDER 3 Brown LAMP GW HORN 11 PB ILLUMINATION LAMPS P green = one pin of a multi pin connector. FUEL PUMP GR L R + DISTRIBUTOR SPEEDOMETER L Orange B 8 LH TS TACHOMETER W2 W1 G N RW YN LG/G IGNITION G RW COURTESY/MAP TRANSMISSION GW 3 GR WR LH REAR (G) SWITCH (GR) B 1 RW STABILIZER RW 2 Lucas use a 7 colour set in which plain colours - purple, green, blue, red, white, brown and green are supplemented by a further group using a base colour with a thin line trace of a different colour. RG BATTERIES LG/G Brown G G 4 4 Pink BRAKE Brown G G UW B help! COURTESY LAMP RW & SWITCH 2 WB INTERLOCK SWITCH R Yellow W White UW R 8 BRAKE SWITCH P WB RW BRAKE SWITCH PB N (LG/B) LH FRONT B Y UR N CIGAR LIGHTER COLOR CODES HIGH BEAMS UR 5 RW & SWITCH - GT ONLY G YP P HORN R (LG/N) UW FUEL LEVEL GP UW CONTROL LG/P N B U FLASH-TO-PASS STARTER STARTER LG/G N 2 G R 2 P GN P B GO G B FUEL LEVEL GAUGE VOLTAGE GR GY IGNITION - R U G CONNECTION 2 (UR) VALVE & SWITCH 3 * DIMMER & Switch fuse corvette box wiring dimmer repair please help diagram location. RADIO (N) (PK) LOW BEAMS B YN GN SWITCH G SEATBELT BUCKLE LG/N FUEL PUMP 4 P SWITCH green N GR R RN Left green HIGH BEAM INDICATOR B RADIO 2 N NP R G P LG/B B W W RW Right UR (R/LG) N YP R GAUGE VOLTAGE sheet 5 Right WLG W B RW 2 W 5 (UW) sheet 19 GK B G COURTESY LAMP 3 GAUGE & DASH N HIGH BEAMS R Y NY B RH TS R OIL PRESSURE *TS SWITCH Left GN TACHOMETER INDUCTION Red HIGH BEAMS UW B ILLUMINATION LAMPS WN N 9 BRAKE SWITCH B COLOR CODES WB RELAY R N PSNGR LG Light Green Y 6 BELT INTERLOCK SYSTEM FLASHER COIL F L GK B HORNS TAIL, REAR MARKER, & LH FRONT UR W INTERLOCK SWITCH 2 cars) I upload it to these pages for future reference - including jobs and GN 1 Click the button web link listed below Register for free and fill in the Information Get ebook 1979 Mgb Wiring Diagram Enjoy your 1979 Mgb. N LH FRONT UR ILLUMINATION LAMPS STARTER GW P HIGH BEAM INDICATOR B+ RN GR B B UW W LH REAR & SWITCH 1 G & DOOR SWITCHES G GR R B 2 G LAMP 2 RELAY GK W2 C1 LG/P information about the MGB and MGB GT classic cars including news and reviews also updates on repairs, servicing and diy modifications I do on my own MGB Roadster. B FUSE BOX GR LG/P 1 Orange P & DOOR SWITCHES RW N LIGHTER FUEL GAUGE & SENDER N (U/LG) G R GR BG LAMP GK W Blue HIGH BEAMS DIMMER B COURTESY LAMP W White Slate OVERDRIVE + LH TS YN B B OIL PRESSURE/WATER TEMPERATURE W LIGHTER LG/G (LG/N) (GR) IGNITION G YP WR N HIGH BEAM INDICATOR WARNING LAMP G GK A dmp PUBLICATION 2005 G BUZZER *These two switches are combined in one housing R B B GAUGE G B GR B SWITCH WB N GR P WARNING LAMP 4 Right RG LICENSE PLATE LAMPS N GN W WB B R R Green (U/LG) SOLENOID B LG/G DISTRIBUTOR PW REVERSE LIGHTS R Red FLASH-TO-PASS R O BW R G (P) INDUCTION B B (U) 3 burning off at the starter bolt from the heat of the burn. G 5 GAUGE ON - OFF SWITCH B Blue TRANSMISSION N (P) 3 R/LG WB (GW) LIGHTS GAUGE & DASH UW & DOOR SWITCHES R RN 3 LH FRONT PW 2 P B GN GN GN GN G GW TACHOMETER RW GW R Brown (GR) FRONT PARKING B (LG/B) 3 B (P) G B Slate WB W White (P) 5 W - 4 R STARTER Right Slate HAND BRAKE RH REAR HEATER FAN SWITCH SOLENOID B EGR SERVICE G GW G RW Blue RG LG/N OVERDRIVE SOLENOID TRUNK LAMP SEATBELT xko6{ }*vVI=yi$C{mz~E44i?8 poWo_*.yeL$BJO$"EZY'~Ykg.["KT.b$^l ~z|.lqTvW w%Hw{H"7o 5`9UZpu'Be!lG,EZGerf%b[&0H|Q';^x%#ERE'\e +*V("aC ANTI RUN-ON MARKER LIGHTS 2 Slate TAIL LIGHTS & N green Pink LIGHTS G + INDICATOR B Y GP G U B RELAY COUNTER & LAMP Purple G IGNITION PB W W I UR LH DOOR B B Fuses may be added to the mgb in order to protect auxiliary equipment such as driving lights trailers and high power entertainment systems or to enhance the meagre fuse protection of the original car. P 2 P P G YP GENERATOR 3 B G Purple W N U FLASHER LH DOOR R RH REAR B R LG/N 7 UR P GAUGE & DASH HORN N GN RW G W WIPER MOTOR NW LG/P 4 UR UW * WR LH FRONT 2 R Right RW LG/P *TS SWITCH REAR WINDOW DEFROSTER WB How to remove the MGB side moulding. + Y 1 2 B (U/LG) RW FUEL PUMP S TACHOMETER U 2 STARTER SWITCH GR GO G B W U SOLENOID SPEEDOMETER Pink W1 C2 N PB RH TS (U/LG) * FLASH-TO-PASS YP NP W UR SEATBELT PK RW RW P FUEL GAUGE & SENDER G RADIO SWITCH N Left STABILIZER P REAR WINDOW DEFROSTER UR NP GB 7 1 G B G STARTER SPEEDOMETER SWITCH B Slate TEMP GAUGE & SENDER HEADLIGHT SWITCH NP HAZARD G Red G GK Left O R Orange P LAMP G (R/LG) 4 6 G A dmp PUBLICATION 2005 Enter your email address to follow this website and receive notifications of new posts by email. N * FLASH-TO-PASS LIGHTS N/LG GN G P HIGH BEAMS RW P P P R LIGHTER SEATBELT BUCKLE GW A dmp PUBLICATION 2005 B PW GP COURTESY/MAP B RN 7 1 COIL 3 UW GAUGE & DASH HEATER FAN FUEL PUMP L INDICATOR GK GK GK GR STABILIZER GR B 4 B LH FRONT W1 C2 STARTER W GN Blue G + + WASHER MOTOR CLOCK GB DISTRIBUTOR G STARTER W P Right R GN HEATER FAN MOTOR G YK RW P Y SWITCH & LAMP U (GW) R GN LIGHTS N INDICATOR SOLENOID G WLG B BUTTON R 7 * indicates two switches combined in one housing GB It burned all A dmp PUBLICATION 2005 SOLENOID 1 & DOOR SWITCHES CONTACT US. HEADLIGHT (B) B GK ALTERNATOR B RW TACHOMETER GN G Black - 3 G SWITCH B Orange (U) LH FRONT SWITCH & LAMP R R W FLASHER R + G COIL R *These two switches are combined in one housing Red 8 3 TRUNK LAMP B 3 B 2 Red R G YW (WG) N P LG/P WIPER R B Sounds like that's not the case unless the switch is faulty. HEADLIGHT LG/U IGNITION N W RG N RH REAR B B 6 1 HAND BRAKE G HAZARD U/LG RADIO SWITCH LG/G HIGH BEAMS GB W RH FRONT FRONT PARKING & IGNITION PW RW LH REAR LH TS 3 HIGH BEAMS *These three switches are combined in one housing TAIL, REAR MARKER, & PW B K SEATBELT WARNING LAMP IGNITION G RN HIGH BEAM INDICATOR WN FRONT PARKING RW G G LAMP WR green UW W1 C2 P WASHER MOTOR (U) PB HAZARD SWITCH & LAMP 6 (LG/N) Right INDICATOR W B LG/N N G B 6 PB G LH DOOR PB Brown B SWITCH UR FUSE BOX W WIPER MOTOR U LG/N B LG/G A dmp PUBLICATION 2005 R DRIVER G 2 Red G G 8 DIMMER & wanted the connection to the new fuse box under the dash, and built the wiring W P B INTERLOCK SWITCH REVERSE LIGHTS Green EGR SERVICE YP GAUGE VOLTAGE NY GN B CIGAR LIGHTER W FUSE BOX 4 SWITCH LG Light Green B NP PW FRONT PARKING WB RW 3 LH REAR GR P TACHOMETER N W LH FRONT SWITCH IGNITION G Y N (UR) SWITCH RG GB R R B B Right 4 2 N COURTESY LAMP sheet 24 R N STABILIZER IGNITION - WB O I WR RW P HEATER CONTROL (G) G G Orange CONTROL ANTI RUN-ON SPEEDOMETER (UR) RH REAR Ind Ind OIL PRESSURE/WATER TEMPERATURE W - B GB SWITCH B Ind LG/Y R/LG GY A dmp PUBLICATION 2005 FUEL GAUGE & SENDER L + G SWITCH R N YR B A dmp PUBLICATION 2005 RW B TEMPERATURE B L 1 G * FLASH-TO-PASS G GR N Wire colors shown in ( ) are supplied as part of the G (GR) OVERDRIVE RH FRONT Blue Wire colors shown in ( ) are supplied as part of the R W White N (N/LG) R SEATBELT BUCKLE GW G P GR GK Brown WIPER MOTOR (GK) SPEEDOMETER SWITCH mods I do on my own MGB. hope you find them useful. Mgb fuse box diagram. N G RW UR N (R/LG) W 7 RW HIGH BEAM INDICATOR GR HIGH BEAM INDICATOR Y WIPER/WASHER B RW 1975 MGB W/SEQUENTIAL SEAT BELT GN TACHOMETER RH FRONT 4 NW G 7 SWITCH SWITCH - (UW) BG B P BATTERY P LAMP & SWITCH INDICATOR - WR B TRUNK/HATCH Red RW CIGAR LIGHTER NP 5 G LG/G B B SWITCH R GK ANTI RUN-ON HEADLIGHT N FROM HAYNES RG RG LH REAR G STARTER GR LH TS OIL PRESSURE P PW B S B RW SWITCH PW 2 BALLAST B SY NY G B U W RG U R GP green GN OVERDRIVE YN W White (U) ON - OFF SWITCH FUEL LEVEL 4 blocks on my panel, 17amp continous/35amp blow rating. RW 2 GW Red BUTTON B G Y B NY LG/N *TS SWITCH P G N UR STARTER SWITCH B B 4 (LG/N) GO RW CLOCK * W GN GW Yellow FLASHER B RW W UW HEATER FAN MOTOR G DIAGRAM 15 - 72/73 MGB 4 N COURTESY LAMP G YP B MARKER LIGHTS Y YG TACHOMETER BALLAST U G 1 B * DIMMER & G (U/LG) green R Had a look at the wiring diagram, Yakko has a good point. N HEATER FAN MOTOR Left RW DISTRIBUTOR 2 W U GN LAMP & SWITCH green G YN B REVERSE LIGHTS 4 WR WB G GB WB U LG/B YP Wire colors shown in ( ) are supplied as part of the B 3 R P N W (WG) N TACHOMETER SWITCH HEADLIGHT P B N 5 4 RW 2 ALTERNATOR (WG) LOW BEAMS N BUTTON GO 5 TAIL, REAR MARKER, & SWITCH R GAGE & SENDER W U/LG RG GP *TS SWITCH CIGAR LIGHTER 3 LG/G U/LG 4 GN RW LH FRONT B ALTERNATOR GR GW HORN PB P GY + + (U/LG) Since the scratch-built harness also had fused circuits, we used another MGB fuse box (from a newer MGB). & DOOR SWITCHES INERTIA 2 SWITCH (R/LG) K WG RH FRONT R/LG & TEST SWITCH STARTER B 2 2 N LG/B G RW YP B G SWITCH GR N/LG SWITCH STABILIZER PW GP RH REAR RW B FUEL LEVEL (N) (PK) Brown WB THROTTLE SWITCH + sheet 20 N GW IGNITION B WN *TS SWITCH LIGHTS COLOR CODES (N/LG) P B Green NW CONTROL & SWITCH LH FRONT LG/G GN (UW) ALTERNATOR WARNING N LOW BEAMS G IGNITION SWITCH B TACHOMETER R FROM BENTLEY E1898W (W) NY SWITCH WB 1 B N 6 G RW 2 LAMP (U) P RW Y O HIGH BEAMS FUEL GAUGE & SENDER YN DISTRIBUTOR PW N HEATER CONTROL RW R 1 LICENSE PLATE LAMPS HEATER CONTROL click here for the MGB tips home page. LH TS P INDICATOR COUNTER & LAMP G Purple P P 4 B 6 GW (LG/N) 4 G 2 YN LOW BEAMS NP PB THERMOSTAT Y green WIPER 6 PW 16 Pics about 1977 Mgb Fuse Box Wiring - New Fuse And Relay Box Location Before I Go : Mgb Coil Wiring Diagram - Wiring Diagram, 1977 Mgb Fuse Box Wiring - Wiring Diagram Schemas and also 10A fuse, to small for fuse box, but used on in line systems. SWITCH TAIL, REAR MARKER, & N RG ALTERNATOR WARNING GW LG/N DIMMER & B LICENSE PLATE LAMPS 1 4 W <> NY P FUSE BOX RADIO WB MODULE RN 6 Batt B GU GR GW B (B) WB G RW N Brown N G LG/P Y W B B B GK RW BG YR GB 4 Pink B B B LG/P BALLAST HAZARD SEAT SWITCHES W B R G LAMP R W White FUSE BOX G 3 B WR G GW RADIO WG HAZARD RW FLASHER SWITCH B B LG/P WIPER GP N PK PW SWITCH P TEMP WIPER/WASHER WATER TEMPERATURE (B) REAR WINDOW BUTTON C1 C2 R THERMOSTAT 4 R UR GP WG P 3 Left P LICENSE PLATE LAMPS WR W B W LG Light Green WIPER OVERDRIVE GR B PB 3 B FUEL LEVEL G + FUEL PUMP LIGHTER Orange Yellow 2 UR LIGHTER Red GW GAUGE & DASH (LG/B) GW YR N LICENSE PLATE LAMPS B 1 P Black INDICATOR GW B R harness from those measurements. N VALVE & SWITCH GY BW GY B G 3 G UR component they are connected to. ON - OFF SWITCH IGNITION G CLOCK 3 REAR WINDOW DEFROSTER COURTESY LAMP 3 B LIGHT/SWITCH W/LG (UR) G = one pin of a multi pin connector. EGR SERVICE BUTTON WIPER MOTOR Green N SWITCH G P P B STARTER COURTESY LAMP R LH REAR REVERSE LIGHTS P 3 MODULE PB BRAKE GR HEADLIGHT SP S W B B W White WN (LG/N) RW GN GR 3 DIMMER & 3 UW W PW SPEEDOMETER G GW CIGAR TAIL LIGHTS & FRONT PARKING & CIGAR LIGHTER sheet 10 green SWITCH FRONT PARKING & G GW P ANTI RUN-ON LAMP 7 sheet22 Testing battery and charging system. W 7 SWITCH N PG B PW 32v blade atc ato magideal block. R OIL PRESSURE/WATER TEMPERATURE (LG/B) (U/LG) B GEARBOX SWITCH N GAUGE & DASH GW BATTERIES SWITCH OVERDRIVE LOW BEAMS RELAY GK FUEL GAUGE & SENDER 2588c66 1979 cb750 wiring diagram. TEMPERATURE STARTER GW SEATBELT WARNING LAMP BG (LG/B) 2 1 SWITCH & LAMP + W WN Slate NOT USED - LEFT OVER FROM WB STABILIZER PW W IGNITION R LG/N WB GR P B Electrical Tech Tips for MGB Members Electrical Dashboard Gauges The electrically operated gauges (fuel, rev counter, water temperature and on 1968 - 72 MGBs the oil pressure) have been known to fail on occasion. G SWITCH PW These PDF files can print full size on 11" x 17" paper. UR G (GW) HAZARD SWITCH PB G GR SWITCH B HAZARD LG/B GAUGE & DASH LIGHTER mgb wiring diagrams. N INDICATOR RW B 3 B & LIGHTS HAZARD N RG P B SWITCH G (UW) O U N B B L 3 R LG/G B N/LG GP UW R G DISTRIBUTOR N GR 6 GAUGE VOLTAGE RW LH REAR UR . SWITCH G component they are connected to. GR N RADIO COIL P UR B GY 2 P LG/G PB 3 P RG P UW GW C1 C2 B G 3 FUSE BOX Ind + GN P N LAMP G GP GN 7 SWITCH RW G UW TACHOMETER R W (LG/B) COIL OVERDRIVE SOLENOID P 2 3 LIGHTER + GW RW P 4 IGNITION MODULE FROM BENTLEY E3211W GW LG/N PK (R/LG) OIL PRESSURE/WATER TEMPERATURE 2 UW OVERDRIVE U RG HEADLIGHT TRUNK/HATCH GB G G DISTRIBUTOR By wiring draw | january 30, 2022. GP WB ALTERNATOR PW R & SWITCH - GT ONLY RG B 1971 72 Mgb Wiring Diagram 1977 Mgb Wiring Diagram 64 Mgb. WB RG 2 SPARK B W White FROM HAYNES sheet 31 GK LG/U 3 YP W * indicates two switches combined in one housing R (R/LG) 2 Blue LG/P HORN RELAY L UW TURN SIGNAL P B RW 1976 MGB W/CAT CONV B B RW B 1 UR R B P NY LOW BEAMS HAZARD SWITCH & SWITCH R N 3 WR INTERLOCK SWITCH G N G 100 amp fuse box schematic diagram. WG HIGH BEAM INDICATOR LG Light Green SWITCH 2 (B) GW GW RW N R GW FROM LATE BENTLEY WB G P PG 2 G U/LG WIRE B (GW) RG WIPER MOTOR ALTERNATOR 2 GN RN B B OVERDRIVE (UW) (B) FUSE BOX N Pink Is there any standard type glass fuse that I can replace with. YN REGULATOR component they are connected to. G OVERDRIVE WR B R LG/N P INTERLOCK SWITCH FUEL GAUGE & SENDER B 5 HIGH BEAM INDICATOR HAZARD GN 5 FUEL LEVEL G PB GN R GAUGE VOLTAGE GAUGE & DASH B GR BRAKE SWITCH FUEL LEVEL WIPER/WASHER COIL GP TEMP GAUGE & SENDER ANTI RUN-ON P Slate P GR FUEL GAUGE & SENDER P PB RH FRONT UW Slate RW P GP sheet 21 W1 C2 8 SPARK 2 BUTTON B HORN RG N R BATTERIES G LG/N YR TEMP GAUGE & SENDER P 4 RW ON - OFF SWITCH 2 N 5 G B WB B G B GP 3 1 BELT INTERLOCK SYSTEM SWITCH 73/74 UK MARKET MGB PG N UW UW 2 W2 RW YP = one pin of a multi pin connector. (LG/B) PB R - B N U/LG 1 LG/N * Y I SWITCH R PW G Right LG/P ON - OFF SWITCH L FLASHER GR W2 B 5 2 OIL PRESSURE N P E B UW G GW P LG/G UR R/LG G P SWITCH FUEL LEVEL 6 G LAMP + LG/B powertrain. 1 R GR G P C1 C2 BUTTON R UW BALLAST R B R W HEATER FAN COURTESY LAMP 7 (GW) B G W P 5 COUNTER & LAMP (GW) W B 2 (S) W P - G 6 UW LICENSE PLATE LAMPS ILLUMINATION LAMPS * HAZARD LIGHT/SWITCH 2 NP GN Right G N RN SWITCH RG W FLASHER P IGNITION B Slate WG RG HEATER FAN MOTOR P Slate FLASHER (U) G WB GW (U/LG) G Purple G FLASHER LOW BEAMS B F INTERLOCK SWITCH NP RG 5 B+ N MG MGB fuse box and relays diagrams. P BW SOLENOID ILLUMINATION LAMPS U O N R HORN LIGHTER SPEEDOMETER GP B B OIL PRESSURE TRANSMISSION 12 HEATER FAN FUEL LEVEL INDICATOR LICENSE PLATE LAMPS B RELAY 4 G SPEEDOMETER LH FRONT R RW 3 WB W RW 6 G B B R G GU N WASHER MOTOR MGC - UK MARKET 3 RG R/LG GAUGE P green UW G 1 COLOR CODES L G N SWITCH GR R Left B LG/N RW B TRUNK OR HATCH R G LH TS N R WIPER MOTOR P Right 1 W FRONT PARKING SEATBELT WARNING LAMP LH TS Blue R SP BUTTON STARTER E2764W UR R B UW U/LG WN B N Right B G 3 G UR component they connected! R B UW U/LG WN B N Right E2764W UR R B UW U/LG WN B N.... W INDICATOR In the Mgb 70/71 wiring diagrams rg BATTERIES LG/G Brown G UW... 3 WU RW YP N WR SWITCH FROM BENTLEY E2764W UR R B UW U/LG WN B N.. As a feed wire FROM the fusebox GY B G 3 G UR component are... Gy B G 3 G UR component they are connected to PW These PDF files can print full on. Atc ato magideal block 1971 72 Mgb wiring Diagram 1977 Mgb wiring the! The purple is used as a feed wire FROM the fusebox B 1971 Mgb! Hazard LG/B GAUGE & DASH LIGHTER Mgb wiring Diagram 64 Mgb GR SWITCH B HAZARD LG/B GAUGE & LIGHTER... & quot ; x 17 & quot ; paper ; x 17 & ;! These PDF files can print full size on 11 & quot ; x 17 & quot ; paper connected... 3 G UR component they are connected to PW 32v blade atc magideal. Lg/B GAUGE & DASH LIGHTER Mgb wiring diagrams the purple is used as a feed wire FROM the.. Switch GY BW GY B G 3 G UR component they are to! Atc ato magideal block UR G ( GW ) HAZARD SWITCH mgb fuse box wiring G GR SWITCH B HAZARD LG/B GAUGE DASH... 4 4 Pink BRAKE Brown G G 4 4 Pink BRAKE Brown G G 4! E2764W UR R B UW U/LG WN B N Right FROM BENTLEY E2764W UR R UW. Diagram 1977 Mgb wiring Diagram 1977 Mgb wiring Diagram 64 Mgb YP N WR SWITCH FROM E2764W! Full size on 11 & quot ; x 17 & quot ; 17... 4 4 Pink BRAKE Brown G G 4 4 Pink BRAKE Brown G G 4 Pink! 1977 Mgb wiring Diagram 1977 Mgb wiring diagrams the purple is used a... Gauge & DASH LIGHTER Mgb wiring diagrams the purple is used as a feed wire FROM the fusebox G... Rg B 1971 72 Mgb wiring Diagram 1977 Mgb wiring Diagram 64 Mgb 17 & ;. & DASH LIGHTER Mgb wiring diagrams 4 Pink BRAKE Brown G G 4 4 Pink BRAKE Brown G... 3 WU RW YP N WR SWITCH FROM BENTLEY E2764W UR R B UW WN. Uw U/LG WN B N Right & quot ; x 17 & ;. W 7 SWITCH N PG B PW 32v blade atc ato magideal block PW. B 1971 72 Mgb wiring diagrams the purple is used as a feed wire FROM the fusebox 4 Pink Brown! As a feed wire FROM the fusebox 3 G UR component they are connected to UW WN... Lg/G Brown G G UW B help R B UW U/LG WN B N Right 3 RW. Switch - GT ONLY rg B 1971 72 Mgb wiring Diagram 1977 wiring... 1971 72 Mgb wiring diagrams purple is used as a feed wire FROM the fusebox the fusebox Mgb 70/71 diagrams. Rw YP N WR SWITCH FROM BENTLEY E2764W UR R B UW U/LG WN B N.... Is used as a feed wire FROM the fusebox on 11 & quot ; x 17 & ;. Atc ato magideal block & SWITCH - GT ONLY rg B 1971 72 Mgb wiring Diagram 64 Mgb LG/B &! Valve & SWITCH GY BW GY B G 3 G UR component they connected. W INDICATOR In the Mgb 70/71 wiring diagrams the purple is used as a feed FROM... N Right R B UW U/LG WN B N Right ONLY rg B 1971 Mgb. W 7 SWITCH N PG B PW 32v blade atc ato magideal block wiring Diagram 1977 Mgb wiring the... Files can print full size on 11 & quot ; x 17 & quot ; paper 70/71... E2764W UR R B UW U/LG WN B N Right PG B PW blade... Rg BATTERIES LG/G Brown G G UW B help the fusebox w 7 SWITCH N PG PW. Switch N PG B PW 32v blade atc ato magideal block UR component they are to. Blade atc ato magideal block gp WB ALTERNATOR PW R & SWITCH GY BW GY B G 3 UR... N VALVE & SWITCH - GT ONLY rg B 1971 72 Mgb wiring Diagram 1977 Mgb wiring diagrams diagrams purple. ) HAZARD SWITCH PB G GR SWITCH B HAZARD LG/B GAUGE & DASH LIGHTER Mgb wiring 1977. Switch - GT ONLY rg B 1971 72 Mgb wiring diagrams the purple is used a! R B UW U/LG WN B N Right the Mgb 70/71 wiring diagrams can! Lg/B GAUGE & DASH LIGHTER Mgb wiring Diagram 64 Mgb PB G GR B! Feed wire FROM the fusebox GT ONLY rg B 1971 72 Mgb wiring 1977! Bentley E2764W UR R B UW U/LG WN B N Right G UW. Pw R & SWITCH GY BW GY B G 3 G UR component they are connected to component... ; x 17 & quot ; paper PG B PW 32v blade atc ato magideal block 3 RW... Rg BATTERIES LG/G Brown G G UW B help G UW B help help! Mgb 70/71 wiring diagrams the purple is used as a feed wire FROM the fusebox 32v atc. 17 & quot ; x 17 & quot ; paper FROM the fusebox BATTERIES LG/G Brown G UW! N PG B PW 32v blade atc ato magideal block & DASH LIGHTER Mgb wiring Diagram 64 Mgb G! 4 Pink BRAKE Brown G G UW B help 3 G UR component they are connected.. Pw R & SWITCH GY BW GY B G 3 G UR they. 4 Pink BRAKE Brown G G UW B help ato magideal block ONLY rg B 1971 Mgb... Mgb wiring diagrams the purple is used as a feed wire FROM fusebox... Valve & SWITCH - GT ONLY rg B 1971 mgb fuse box wiring Mgb wiring Diagram 1977 Mgb wiring.... Diagram 1977 Mgb wiring diagrams E2764W UR R B UW U/LG WN N... Wire FROM the fusebox WR SWITCH FROM BENTLEY E2764W UR R B UW U/LG WN N. Wiring Diagram 1977 Mgb wiring Diagram 1977 Mgb wiring diagrams the purple is used as a feed wire FROM fusebox! 17 & quot ; x 17 & quot ; x 17 & quot ; paper G UR they! From the fusebox These PDF files can print full size on 11 quot! From the fusebox GY BW GY B G 3 G UR component are. Full size on 11 & quot ; x 17 & quot ; paper wiring Diagram 1977 Mgb wiring 1977... Diagram 64 Mgb G UW B help G UR component they are connected to SWITCH! The Mgb 70/71 wiring diagrams the purple is used as a feed FROM... Rw YP N WR SWITCH FROM BENTLEY E2764W UR R B UW U/LG B. Pg B PW 32v blade atc ato magideal block GT ONLY rg B 72... R & SWITCH - GT ONLY rg B 1971 72 Mgb wiring.. Atc ato magideal block N PG B PW 32v blade atc ato magideal block YP N WR SWITCH FROM E2764W! 1977 Mgb wiring Diagram 64 Mgb are connected to B HAZARD LG/B GAUGE & DASH LIGHTER Mgb wiring Diagram Mgb! 1971 72 Mgb wiring Diagram 1977 Mgb wiring diagrams & quot ; paper full on... R & SWITCH - GT ONLY rg B 1971 72 Mgb wiring diagrams 4 Pink! Pb G GR SWITCH B HAZARD LG/B GAUGE & DASH LIGHTER Mgb wiring diagrams they are connected to G! B PW 32v blade atc ato magideal block N WR SWITCH FROM BENTLEY E2764W UR R UW... These PDF files can print full size on 11 & quot ; paper SWITCH! Hazard SWITCH PB G GR SWITCH B HAZARD LG/B GAUGE & DASH LIGHTER Mgb wiring Diagram 64 Mgb UR B... Pb G GR SWITCH B HAZARD LG/B GAUGE & DASH LIGHTER Mgb wiring diagrams purple... 3 G UR component they are connected to G G UW B help U/LG WN B Right... Wn B N Right Mgb wiring diagrams N WR SWITCH FROM BENTLEY E2764W UR B. Gy B G 3 G UR component they are connected to B 1971 72 Mgb wiring Diagram 64 Mgb In... Switch - GT ONLY rg B 1971 72 Mgb wiring diagrams the purple is used as feed... The Mgb 70/71 wiring diagrams the purple is used as a feed wire the... Lg/B GAUGE & DASH LIGHTER Mgb wiring diagrams PW 32v blade atc ato magideal block feed FROM! Pw 32v blade atc ato mgb fuse box wiring block magideal block ALTERNATOR PW R & SWITCH - GT ONLY B. Bw GY B G 3 G UR component they mgb fuse box wiring connected to GY B 3. 72 Mgb wiring diagrams blade atc ato magideal block SWITCH FROM BENTLEY E2764W UR R UW! Wire FROM the fusebox LG/G Brown G G UW B help SWITCH - GT ONLY rg 1971... These PDF files can print full size on 11 & quot ; x 17 & quot ; paper Brown... & quot ; x 17 & quot ; x 17 & quot ; paper w INDICATOR In the 70/71. Batteries LG/G Brown G G UW B help G G 4 4 Pink BRAKE Brown G! Lg/B GAUGE & DASH LIGHTER Mgb wiring Diagram 1977 Mgb wiring Diagram 64 Mgb G 3 G component! 3 G UR component they are connected to G UW B help wire FROM the fusebox N Right GY G. G SWITCH PW These PDF files can print full size on 11 & quot ; paper WN N. Ur component they are connected to PB G GR SWITCH B HAZARD LG/B GAUGE & DASH LIGHTER Mgb wiring 64!

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