G HORNS G WASHER MOTOR G 2 W1 W 2 P RG ILLUMINATION LAMPS P B B CLOCK PB * SWITCH Left W2 WIPER MOTOR G DIMMER & HAZARD 1 Y TURN SIGNAL & DOOR SWITCHES LG/P B UW G 7 2 U DRIVER INTERLOCK SWITCH FRONT PARKING (UW) HEATER FAN WIPER MOTOR W 4 2 W R G REAR WINDOW DEFROSTER G LH DOOR The wiring diagram is proving to be exceptionally useful. B Search for Wiring Diagrams 1963 Mgb here and subscribe to this site Wiring Diagrams 1963 Mgb … PW FUEL PUMP WG RELAY N TACHOMETER SP RESISTOR G B A dmp PUBLICATION © 2005 ILLUMINATION LAMPS THERMOSTAT N 3 G R SWITCH HIGH BEAM INDICATOR Red R GN LAMP Cool MG stamps from small islands November 11, 2020; A “barn” find 1986 Lotus Esprit Turbo HCI November 4, 2020; Lucas Wiring … FRONT & REAR - (GW) Select your vehicle from the list above. LG/Y GW + B+ G †OVERDRIVE BG SWITCH * U WIRE R HAZARD LG/B GN SWITCH R (N/LG) B LH FRONT GAUGE & DOOR SWITCHES (G/K) LG/B WLG BUTTON G LG/N P THROTTLE SWITCH W S SWITCH WG FUSE BOX & SWITCH W PW ALTERNATOR YP BRAKE SWITCH DISTRIBUTOR COIL G P B (UR) WR GO GK UW WN ALTERNATOR B RW GY G G B GW P GW 2 OIL PRESSURE/WATER TEMPERATURE R N component they are connected to. G WASHER MOTOR LH FRONT B DIAGRAM 14 - 72/73 MGB Purple WLG G UW TAIL LIGHTS & BATTERIES Right SEATBELT LAMP N W G B I IGNITION GW 4 G UW B NY NP NW R R (R/LG) (LG/N) LG/G ON - OFF SWITCH RW 1 LICENSE PLATE LAMPS YP W G P TRUNK/HATCH *TS SWITCH TACHOMETER RW LG/N SWITCH & LAMP * DIMMER & SWITCH RN O WB GY P LICENSE PLATE LAMPS LG/B GW 1 R RG YN RW 5 B B SWITCH Left RW STARTER (UR) R DIMMER R 5 DIMMER & G U B W PB W + W2 C1 GW Orange LOW BEAMS R (WG) WR B B (GW) green REAR WINDOW DEFROSTER B RW P DRIVER WG GK PW + 2 1 SWITCH G RH FRONT GP R Black LH FRONT 7 WIPER MOTOR CONNECTION Y RW DISTRIBUTOR F R B HIGH BEAM INDICATOR RW (WG) GAUGE O P TAIL LIGHTS & G B HAZARD * W RELAY STABILIZER B WG GK GW 8 RW N GB GU R (UR) RG B W 4 GW 4 R WB IGNITION MGB Wiring Diagram – Terry’s. PW INDICATOR R W1 C2 HIGH BEAM INDICATOR SWITCH GP B RG SWITCH Y R G RH TS P W P P SWITCH R B ILLUMINATION LAMPS Slate (U) RH REAR & SWITCH GP LG/N component they are connected to. INDICATOR 3 CIGAR R B Wire colors shown in ( ) are supplied as part of the G WIRING HARNESS, complete, vinyl RD from (c)360301 to 368081, 1974.5-early 1975 357-378 GW HEADLIGHT FROM LATE BENTLEY P RG MARKER LIGHTS W2 G B B N U * indicates two switches combined in one housing YR Right GW GP WN LAMP (N) (PK) Orange GK SWITCH K (GR) BUZZER OIL PRESSURE HORNS FUEL GAUGE & SENDER GR WN GN SPARK PSNGR GN P GY N GW 2 1 W B green R ALTERNATOR LG/G P TEMPERATURE R SIDE MARKERS PW RW 7 3 DEFROSTER SWITCH B R LH TS N FUEL LEVEL 1 LG/G 4 L G SWITCH INDICATOR PSNGR NW DIAGRAM 2 - 64/67 MGB NY 5 RG (N/LG) PW BG GAUGE VOLTAGE 3 P 4 B PK B & DOOR SWITCHES LH FRONT WIPER MOTOR G W BRAKE B TRANSMISSION GR RW B Orange VALVE & SWITCH (U/LG) COLOR CODES G SWITCH RELAY Left N LH DOOR B (LG/N) OIL PRESSURE R + PW PW REAR WINDOW DEFROSTER GW BUTTON R 1 B (W) †OVERDRIVE G UW W B R P N B B P Reference – Andy Martin . 5 P Purple G N R B G VALVE & SWITCH B LIGHTER RW FLASH-TO-PASS G B R/LG GN IGNITION GB P 1 B P SWITCH N COIL W/LG R N WN B 7 GK GAUGE VOLTAGE WATER TEMPERATURE NY BG COURTESY LAMP GR 11 GR DRIVER RW & LAMP U SWITCH W LIGHTER †OVERDRIVE 3 G LG/N ALTERNATOR WARNING SWITCH B Slate GK B G + UW 2 SOLENOID G LG/P Yellow MOTOR UR R G B B SWITCH Wire colors shown in ( ) are supplied as part of the B WIPER MOTOR *These two switches are combined in one housing HAZARD SWITCH LG/G N W B OVERDRIVE 3 SWITCH (GW) *TS SWITCH 2 TRUNK/HATCH R P FUEL PUMP GW DIMMER & N RW C1 NW (S) GP R FUEL LEVEL GAUGE & DASH W White FUEL PUMP DIMMER LG/P CIGAR P GK SEATBELT BUCKLE W B HEATER FAN MOTOR WR WR WN PB N 3 Yellow R B B REVERSE LIGHTS N R R UW G R TACHOMETER BG SWITCH G B L LG/N FUEL LEVEL G G (B) R LIGHTS TACHOMETER Left CIGAR LIGHTER HIGH BEAM INDICATOR Red TACHOMETER PB WR U GK NY GAUGE & DASH SPEEDOMETER 2 B component they are connected to. MARKER LIGHTS (U) G 1 2 GAUGE GR GK GAUGE SEAT SWITCHES green G Left LG/U UR UR B RW 7 S R W RH TS W 1 MODULE RG TAIL LIGHTS & WB - TURN SIGNAL (P) WB + ALTERNATOR WARNING GW UR HATCH 7 + RW RG SWITCH GP LAMP N LG/N B P HIGH BEAM INDICATOR 7 W HEATER N Blue R SEATBELT 3 (U/LG) HAZARD 6 RH FRONT B FLASH-TO-PASS RH REAR WG 6 HIGH BEAMS B B SY GAUGE & DASH G NW = one pin of a multi pin connector. G W N G COIL SWITCH R Orange HAZARD SOLENOID BW Y 2 B LAMP HEATER FAN UR RADIO W B G N OIL PRESSURE/WATER TEMPERATURE RW W STARTER G CONNECTION WN GK R COLOR CODES SPEEDOMETER Blue W G P YN R 3 WIPER MOTOR Y *TS SWITCH *TS SWITCH Green I UR SPEEDOMETER 2 GW IGNITION P 2 N R 3 FUEL GAUGE & SENDER G Y GAUGE WR 3 GN LAMP LAMP BRAKE FAILURE N 2 B 4 CONTROL IGNITION R BRAKE SWITCH INDICATOR N UR N BELT INTERLOCK SYSTEM & INDICATOR (GT only) W B RH REAR R Red W1 W2 W WIPER MOTOR 3 GAUGE green component they are connected to. STABILIZER RADIO GW G P G N 2 B B (U/LG) B STARTER R SEATBELT WARNING LAMP W 2 GW REAR WINDOW BRAKE FAILURE GP GR WR GW G N HEATER CONTROL RW W White HIGH BEAMS P BUTTON SY SPEEDOMETER WARNING LAMP B SP HIGH BEAM INDICATOR Y 5 P IGNITION PB (LG/N) Red + + BUZZER Y WN Wire colors shown in ( ) are supplied as part of the GN G HAND BRAKE G RW (P) HORN GK W SWITCH WB B G 1 B B 3 TRANSMISSION INDICATOR YR 3 Y WB G G P GR N RW TRUNK LAMP RH REAR TRANSMISSION GEARBOX SWITCH R B OVERDRIVE B N WIPER MOTOR N UW BRAKE SWITCH N GAUGE (LG/B) WR TRANSMISSION BO GR + STABILIZER GY REAR WINDOW DEFROSTER B B HEATER FAN PW K REVERSE SWITCH P (R/LG) G Black G INDICATOR 2 & DOOR SWITCHES B R WR P 2 U CIGAR SWITCH RW BG * B B R HAZARD CIGAR LIGHTER R RW TACHOMETER G W White COOLING W Brown HEATER FAN N Green WLG FLASHER SEATBELT BUCKLE I LH FRONT O INTERLOCK SWITCH LG/G G Y W B WN N BALLAST G GN LAMP N Mechanical tacho, dynamo. R B OIL PRESSURE 1978 & LATER MGB B ALTERNATOR R R N TAIL LIGHTS & B N 2 G R G B G DISTRIBUTOR Purple Y NY DIAGRAM 7 - 67/68 MGB RW R L O 1 GR + LIGHTS RW (UW) B B GW (N) (PK) UW B BATTERIES LH FRONT SWITCH 3 Orange N L N FRONT PARKING BRAKE FAILURE W BG UW N UW GW P LG/G (GR) IGNITION SWITCH WG UR B G G G LG/N HORN B N/LG GR B G RW Slate FUSE BOX P TEMP B 1955 1956 1957 1958 1959 World Market Cars $ 17. 3 RG N A dmp PUBLICATION © 2005 F GR R CIGAR LIGHTER (GW) LOW BEAMS SWITCH B G - R B P Slate Black LG/N & SWITCH - GT ONLY SWITCH WIPER/WASHER FUEL GAUGE & SENDER YP green STARTER B WASHER MOTOR RW LG Light Green P HEATER GP & SWITCH - GT ONLY G G K ALTERNATOR B GK (LG/N) R B G G PW TAIL LIGHTS & NY HEATER FAN TACHOMETER B B RW G LG/N U The site costs me over $1,000 per month keep online and is totally reliant LH TS PG SPARK P component they are connected to. RW B G G G G 1 HEATER FAN B sheet 3 PB R Right IGNITION TAIL LIGHTS & NY 2 P 1 & DOOR SWITCHES P - Y RW - (S) (N) Pink COIL N IGNITION G LG/G RG W GAUGE VOLTAGE - INDUCTION 3 Orange PW P P (P) B WIPER MOTOR DISTRIBUTOR B 2 B L LG/B NY P 8 B Orange GU R PB green GP B G LH FRONT R TACHOMETER RW N YG B INDICATOR N SPEEDOMETER G LIGHTER INTERLOCK SWITCH G G UR RW R G + Orange WB RW DIMMER W OVERDRIVE CIGAR LIGHTER TAIL, REAR MARKER, & TEMP GAUGE & SENDER (UR) IGNITION B GP Brown GB SWITCH 2 A dmp PUBLICATION © 2005 W LOW BEAMS GK B N (GW) N/LG 2 B RW YN CONTROL PW N BATTERIES UR 8 sheet 2 NG 1 FRONT PARKING & B (U/LG) Blue P HEATER FAN MOTOR RW DIMMER GR G Brown L B B CONTROL G P (N/LG) RELAY R Cast Iron Gas Fired Boilers . N LH TS YP GR WARNING LAMP P Red P Pink 1 B BATTERY REVERSE LIGHTS RG RW RW G GN BW RW B ALTERNATOR WARNING UR LAMP ANTI RUN-ON TEMPERATURE LG/B SWITCH TRANSMISSION P Red Brown HIGH BEAMS G TURN SIGNAL P WB sheet 7 2 B RH REAR Black 1 P G SWITCH WB R GAUGE & DASH PG HEADLIGHT P LAMP RW B W B BRAKE SWITCH UW SWITCH (GR) GN R GN B WB Yellow GW Purple BATTERY *HORN R 2 CIGAR P W1 W White LOW BEAMS G L FANS N GAUGE VOLTAGE G W G (W) SWITCH WR SP B Y W1 RW Orange LG/N SP NY ILLUMINATION LAMPS + P W Ind PG STARTER (LG/N) N P B Slate VALVE & SWITCH RW B FLASHER IGNITION B B RH FRONT Green R WN RH TS PW RH REAR GAUGE UR G LOW BEAMS IGNITION IGNITION UR HORN R LIGHTER UW R HAZARD 7 R 4 STARTER RG N INTERLOCK SWITCH LG/P green G Blue 3 WR (GR) G REVERSE LIGHTS FLASHER R G GAUGE ALTERNATOR WARNING LG/N FLASHER 4 ALTERNATOR STABILIZER LG/N GP COURTESY LAMP STARTER N B TEMP GAUGE & SENDER OVERDRIVE GR GN GK P G B G GK (UW) B OIL PRESSURE/WATER TEMPERATURE RW SPEEDOMETER REAR WINDOW DEFROSTER, B SWITCH = one pin of a multi pin connector. G RG B WIPER/WASHER B P G P LG/B WB GAUGE 1 P FLASHER N N COIL 2 FRONT PARKING W OIL PRESSURE/WATER TEMPERATURE - GK + Slate (N) (PK) P B R G Ind Ind R G R BRAKE SWITCH W/LG An ISO 9001-2008 Certified Company P/N 37611601, Rev. WU component they are connected to. - GR G Green N INDICATOR L SWITCH LAMP HEATER FAN PB GR G RG WB GK Right R 3 B WR Purple B LH TS (GR) Right W Orange 1 Right GN BUTTON SWITCH N WG (P) GU W2 C1 BRAKE ILLUMINATION LAMPS Y W ALTERNATOR WARNING FUEL PUMP W LIGHTS REVERSE LIGHTS INTERLOCK SWITCH GP Y UR LH FRONT (U) RW B N WIPER RW RW W LG/N 1 GN N/LG P RH TS P BATTERY 5 Right FLASHER L 1 OVERDRIVE G W FLASH-TO-PASS GR LOW BEAMS RH FRONT G P INTERLOCK SWITCH RADIO SPEEDOMETER LG/P N 2 COLOR CODES LAMP GR GN U BATTERIES IGNITION PK U PB GY Slate + + N R GR (U/LG) B PW Wire colors shown in ( ) are supplied as part of the 2 BALLAST B N/LG 5 (R/LG) OVERDRIVE U/LG GW P B 8 B B (UW) U N B HAND BRAKE N LG/G G RW WG BATTERY B N green PW LG Light Green FRONT PARKING & LAMP TRANSMISSION GP GK ALTERNATOR WARNING - WR GN sheet 11 G 1 O Orange SWITCH = one pin of a multi pin connector. WB ILLUMINATION LAMPS G G WG B P W REVERSE LIGHTS SWITCH 5 R P FUEL GAUGE & SENDER GB 3 DIAGRAM 10 - 70/71 MGB W2 W1 Green COIL P B R B P GK OVERDRIVE INTERLOCK SWITCH G R R & DOOR SWITCHES 3 HEATER FAN P Black 1 R B 6 B PB Brown RELAY W (B) U P N TAIL LIGHTS & 6 2 N LH REAR UW LH FRONT SWITCH GR component they are connected to. LG/N P SWITCH (UW) G INTERLOCK SWITCH BRAKE FAILURE R HEATER FAN B RADIO TACHOMETER ILLUMINATION LAMPS B GP W SPEEDOMETER YR 4 LG/N (LG/N) R RELAY A dmp PUBLICATION © 2005 B U/LG RG R O UW (U) W G SWITCH + + B+ Y (GW) HEADLIGHT FUEL PUMP HEATER FAN MOTOR B N 2 O W HEADLIGHT HIGH BEAM INDICATOR W 5 TRANSMISSION GR 7 TACHOMETER DISTRIBUTOR * LG/N DIAGRAM 13 - 71/72 MGB W COURTESY LAMP YR G P G R P R NP B IGNITION (LG/N) B G RN B G Right MODULE Green SPEEDOMETER (N/LG) RW SPEEDOMETER G G B B W RW B (B) FUEL LEVEL B Right B 3 RADIO B R G GW B R REVERSE LIGHTS WR B RW W R GR N GW G SWITCH 3 1 REVERSE LIGHTS UR CIGAR LIGHTER WIRE 2 R/LG OIL PRESSURE Right R B 2 LIGHTER WIPER MOTOR P GR P B B W R NY B NP INDICATOR RW Right P R (N) (PK) G Y Left 2 B GB G FLASHER SWITCH DISTRIBUTOR * indicates two switches combined in one housing RW LH FRONT G B C1 C2 SEATBELT WARNING LAMP G (P) WB Purple BRAKE SWITCH SY GK HAZARD 6 GAUGE & DASH N SWITCH RW LAMP W P Wiring Diagrams for MGB, MGC Click links for 33 different wiring diagrams for MGB and MGC, large format in color. Orange STARTER SWITCH W & TEST SWITCH N Academia.edu no longer supports Internet Explorer. P RW SWITCH W RW ALTERNATOR 5 REGULATOR ALTERNATOR WARNING YP COUNTER & LAMP ILLUMINATION LAMPS 3 G I B HAZARD BATTERIES FUSE BOX 1 2 R 3 N Right Y N (UR) LG/N 8 ILLUMINATION LAMPS STARTER 3 Slate HIGH BEAM INDICATOR G (GW) & SWITCH G (GW) IGNITION GR G LG/N B + + HAZARD G O B GAGE & SENDER Yellow GN GW R FUEL LEVEL RW N SOLENOID G GR GK 6 B FUEL LEVEL RH REAR RW SY Ind W1 W2 TEMPERATURE WN RH FRONT W TAIL, REAR MARKER, & G N G SWITCH GY 3 HEATER CONTROL W L LH DOOR B HEATER CONTROL RW EGR SERVICE RW B N/LG N Yellow P B G COURTESY LAMP N DIMMER & RG WG RW B LIGHTER B UR B R * indicates two switches combined in one housing G GP GR LIGHTER THERMOSTAT O GR R GP R & SWITCH GK LG/P G (B) GB *TS SWITCH 5 BW PW G GW green W (R/LG) GN G COURTESY/MAP W F GB UW P P LIGHT/SWITCH Slate Red , servicing, repairs and mods on my own classic car a 1975 MGB Roadster Would to. 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