FROM BENTLEY E2766W G N (P) (UW) SWITCH B 2 YN TACHOMETER YP P W N/LG RH FRONT U/LG 5 & DOOR SWITCHES B WB FRONT PARKING STABILIZER B RW N R B G B UR R 5 mgb fuse. (UW) B 1 R N WIPER MOTOR B BUTTON - R/LG RW COURTESY/MAP G N Brown GP U W IGNITION (S) SWITCH White PASSENGER SEAT RG LG Light Green B IGNITION R RW BW Subscribe to: . G BRAKE SWITCH 3 GO Right G FUEL LEVEL Y GP RADIO B UW GR RW R 8 BATTERIES B W2 Black HAZARD & LAMP G = one pin of a multi pin connector. sheet 2 SEATBELT WARNING LAMP RG U P P LG Light Green + ALTERNATOR U/LG GR HORN G COIL B B SOLENOID G B NY LIGHTER RG HIGH BEAM INDICATOR GK W LOW BEAMS P LAMP P HORNS G & TEST SWITCH B L E HEATER FAN R B Red RW B 3 STARTER WB component they are connected to. red COURTESY LAMP N Green A dmp PUBLICATION 2005 Plus, we taped and labeled the MGB harness just as we had with the Miata harness; as sections of the harness were completed, the labels came off. 1 GK 3 (UR) R YK LATE US MARKET MGB UW P HAND BRAKE B RW LH REAR Slate N GP UW HORN WG HEADLIGHT G B C1 CONTROL GW LIGHTER 3 R GN LG/N (U) GW N LICENSE PLATE LAMPS G + UW * indicates two switches combined in one housing N WB 1 CIGAR HIGH BEAM INDICATOR TURN SIGNAL LOW BEAMS YP Left YR P FLASH-TO-PASS GR U B NY HORN B SEATBELT WARNING LAMP (S) 4 2 P UR R RG RG YO G TACHOMETER Slate Y G HEATER CONTROL SWITCH W2 C1 N LG Light Green B P RW INDICATOR W N Wire colors shown in ( ) are supplied as part of the B GP N N 7 LH TS G B LAMP & SWITCH YP B 8 BATTERIES HEADLIGHT SWITCH G R GW B N * HEATER FAN MOTOR GP N WLG HEATER FAN MOTOR IGNITION LG Light Green LAMP + + PB BATTERIES 2 SWITCH RW GAUGE VOLTAGE ON - OFF SWITCH GR * and indicate two switches combined in one housing STARTER R RW G SWITCH, & INDICATOR W TURN SIGNAL *HORN R LH FRONT 3 LG/B Orange B STARTER HIGH BEAM INDICATOR GAUGE VOLTAGE UR G 2 B B LIGHTER WN GP HEATER CONTROL COOLING G P LG/G 2 CONTROL 2 2 Enter your email address to follow this website and receive notifications of new posts by email. R 3 N UR GW RW (WR) G 7 B GR P GR GW Purple B B Y *These two switches are combined in one housing (R/LG) B LH TS LOW BEAMS LIGHTS 2 SWITCH GR TRUNK/HATCH G PG GP IGNITION 2 SOLENOID SOLENOID RW * DIMMER & OVERDRIVE RADIO N B N 4 W White GP UW G P LAMP *TS SWITCH B BELT INTERLOCK SYSTEM G PW B 1 RW B P LG/N (GR) SP HEATER FAN W + P B W SWITCH G P WB 3 GK B GP P IGNITION G (N) Green YP TRANSMISSION RW I RH REAR Left Orange UR INDICATOR 3 FUEL PUMP PW N PW R STABILIZER L RADIO 4 W = one pin of a multi pin connector. G STABILIZER GR R 3 REAR WINDOW GR B G MARKER LIGHTS IGNITION NW jqezy^\gd9" +w-jvSyYZw4Z]E%'q HEATER FAN G G 2 L GR G W COLOR CODES N G Slate 8 N CIGAR LIGHTER B B (N) (PK) HEATER B RELAY BG COLOR CODES ILLUMINATION LAMPS W + LG/B BRAKE FAILURE GW WIPER/WASHER WB P N G G W B HORN RG G GU B 32v blade atc ato magideal block. B G UW COURTESY LAMP B Orange Red Yellow RW DIAGRAM 17 - 73/74 MGB GY WR 1 R RW 2 DISTRIBUTOR P UW 2.one to starter relay 3. one to ignition, headlights and hazard relay. GAUGE VOLTAGE WIPER MOTOR INTERLOCK SWITCH 1974 - 1975 MODELS WITH SEAT *These two switches are combined in one housing P 1 WB B green GW U G N Red (P) G FLASH-TO-PASS YN COURTESY LAMP PW R LG/N G 3 HEATER CONTROL 4 P G (GK) B P GAUGE VOLTAGE G DIMMER HEADLIGHT SWITCH BRAKE 6 Y W B WR GW 4 G Y W/LG P (G) (U/LG) RH REAR + INDICATOR B K U Pink G N MARKER LIGHTS 4 UR SWITCH B PW B R FUEL PUMP Y L Sounds like that's not the case unless the switch is faulty. sheet 4 REAR WINDOW DEFROSTER W1 WIPER REAR WINDOW RELAY (B) Wire colors shown in ( ) are supplied as part of the PSNGR YP TACHOMETER Brown Brown Since the scratch-built harness also had fused circuits, we used another MGB fuse box (from a newer MGB). G R LIGHT/SWITCH LH REAR GAUGE VOLTAGE LICENSE PLATE LAMPS OIL PRESSURE/WATER TEMPERATURE W White STARTER LG Light Green N B TURN SIGNAL N WN GW RG RH FRONT BRAKE TRANSMISSION B WB GK on donations to keep it going. sheet 7 PB LG/N PK INTERLOCK SWITCH 3 IGNITION R G N INTERLOCK SWITCH RG *TS SWITCH FROM BENTLEY green HEADLIGHT GP GR GW + RW K Left STABILIZER I A dmp PUBLICATION 2005 R STABILIZER LG/N Right G RH REAR UR R R ON - OFF SWITCH B N LOW BEAMS W U UR - N LG/N B HORN B BELT INTERLOCK SYSTEM RW 2 HORNS G N B Green G GB WIPER MOTOR G 5 WIRE WASHER MOTOR SEATBELT BUCKLE O LIGHTS B 8 B LG/B GW Wire colors shown in ( ) are supplied as part of the GW GR LH FRONT RW HEATER FAN GR GK Mgb Fuse Box Diagram - Wiring Diagrams cars-wiringdiagram.blogspot.com. F HEATER FAN MOTOR COURTESY LAMP W & SWITCH RW Green DIMMER R Orange RW W 4 SPEEDOMETER R NP LG/G UR Red W * DIMMER & Y R TACHOMETER RW R (R/LG) B B TAIL LIGHTS & P WB 3 2 YP DIMMER RH REAR R R UW LG/N <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 595.32 841.92] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> (G/K) RH REAR RH FRONT BG + HIGH BEAM INDICATOR W R Enter your email address to follow this website and receive notifications of new posts by email. Web 1978 mgb engine wiring harness. O FLASHER GAUGE VOLTAGE SPEEDOMETER (U) C1 WR N WN & SWITCH Black FRONT PARKING & U PG Y LIGHT/SWITCH N W G 5 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. LH TS Bodywork.part number owm935.information on repair and service manualsnote that repair manuals are . Pink LG/G PB 7 G Right G = one pin of a multi pin connector. 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. green GR DIMMER & TRANSMISSION SWITCH HEATER CONTROL RW & SWITCH B STARTER PK 4 LICENSE PLATE LAMPS R GP B Black LG/N G N W White HAZARD TAIL, REAR MARKER, & green RH TS W G 5 OIL PRESSURE/WATER TEMPERATURE B RG B W W HAND BRAKE 5 R HEATER FAN P + + ALTERNATOR WARNING W W PW C1 R RG U B SWITCH SEATBELT B W P INDUCTION B B R WIPER/WASHER U P GO B B R A dmp PUBLICATION 2005 3 GR 1 G LH TS ALTERNATOR WARNING LG Light Green B N 1 CONTROL R P 3 LH REAR G U I would like to know which one it is without taking them all out. WR (GW) B GW G R STARTER B Pink (LG/N) RW Black G P (G/K) DIAGRAM 4 - 68/69 MGB N LG/G TEMPERATURE G INDICATOR W G B R G UW P I P Ind HEATER CONTROL RW BW GR 3 YP FLASH-TO-PASS + COLOR CODES B DIMMER N/LG R Orange P 3 RH FRONT G COLOR CODES IGNITION please click here and follow the instructions. N WN P P GK G UW WG COIL N N YR B B 7 TACHOMETER Slate INTERLOCK SWITCH N/LG LG Light Green B LIGHT/SWITCH HORN NY STARTER LG/N RW LOW BEAMS WIPER/WASHER 3 IGNITION GW = one pin of a multi pin connector. Right WR Y B G Y 6 Blue W W STABILIZER Blue SWITCH G GB P HAZARD IGNITION SWITCH HIGH BEAMS 3 N P TRANSMISSION OIL PRESSURE GAGE & SENDER G RH TS LH FRONT G B B RH FRONT LOW BEAMS GN N DISTRIBUTOR G R G P YP STABILIZER Red SWITCH CONTROL DIMMER & LG Light Green TAIL LIGHTS & 12 G P LH REAR + (U/LG) GN IGNITION LH DOOR UW LAMP & SWITCHES LG/N red 3 GN B FUEL PUMP 100 amp fuse box schematic diagram. 3 2 G RH FRONT R B N W2 W1 GN WG GU W U * DIMMER & PW PW (W) WB Y B N P COLOR CODES RN Y G 5 R GW YP N UW N LG/P UW P R SPEEDOMETER CIGAR N LAMP R REVERSE LIGHTS UW Get access to all pdfs for this model paying only $15, MG MGB PDF will be shown after captcha resolving, 2023 All rights reserved - OnlyManuals.com, Get your hands on the complete MG factory workshop software. B LAMP N/LG GN SWITCH MARKER LIGHTS R GW B (UW) At least when the [], When ever I find useful and interesting information about the MG MGB & GT (or any other classic WN GW N Y HORNS SOLENOID W HEATER DIMMER UR GAUGE & DASH Left GW 1 HEADLIGHT SWITCH LICENSE PLATE LAMPS 5 GAUGE & DASH P N Orange N WB OIL PRESSURE RW SPEEDOMETER RW Slate & SWITCH BATTERY LG/N WIPER MOTOR 3 LAMP FROM LATE BENTLEY Purple Right L 4 W White 2 COOLING W White B SWITCH W R 5 UW + R ALTERNATOR WARNING G P BUTTON YP Yellow B B G 1976 Vw Beetle Wiring Diagram. R B Purple BATTERY INDICATOR B BG RH REAR R RN P W Purple GP RH TS N 5 WB W B LG/G N/LG HEATER FAN G - LG/N R W White P RW (U) G = one pin of a multi pin connector. P N Free postage. RN GAUGE VOLTAGE COURTESY LAMP RW GN W G B N GR WU PW powertrain. G FLASH-TO-PASS R ALTERNATOR 14.50. N SWITCH W GN GW B GK F LIGHTER D U TEMP GAUGE & SENDER GW L cars) I upload it to these pages for future reference - including jobs and G Pink LG/P Green 5N U B 3 STARTER GU COURTESY/MAP COOLING 1 G UW COIL REAR WINDOW DEFROSTER G B U SOLENOID SPEEDOMETER TAIL, REAR MARKER, & G IGNITION OVERDRIVE R G ALTERNATOR GB STARTER YP R GN PW Right + N LG/N UR GW Y UW UR W LIGHTER A dmp PUBLICATION 2005 Orange LOW BEAMS * and indicate two switches combined in one housing OIL PRESSURE Brown PG 3 B B OIL PRESSURE ILLUMINATION LAMPS N SWITCH FUEL PUMP B DIMMER & Batt + + 1 RG G WIPER HEADLIGHT B UR SWITCHES CIGAR B W B (U/LG) RESISTOR B WLG G REVERSE LIGHTS ILLUMINATION LAMPS FLASHER HAZARD TEMPERATURE R BATTERY INERTIA RG SWITCH & LAMP GP G RW R R G 11 Red Blue 2 GK B G B S IGNITION HORN BALLAST WG 7 4 N B FUEL GAUGE & SENDER Blue UW UW NY 5 2 OVERDRIVE G RG G Batt + + RW (P) WASHER MOTOR BG YP N WIPER MOTOR Right RH REAR 8 G GR 3 W B TURN SIGNAL R SY INDICATOR GN P B INDICATOR LAMP R WASHER MOTOR SWITCH COIL GP PG LG/N W G Remove from terminal #5 of the fuse box (hot side) the connector with the white/brown wires on it. G *These two switches are combined in one housing LG/N INDUCTION DISTRIBUTOR B - W 4 SWITCH P WIPER MOTOR Wiring and Fusing - BS-AU7 Colour Codes In the United Kingdom the British Standard BS-AU7 determines colour coding of automobile wiring. G R U 4 C1 C2 * RH TS component they are connected to. R YU B GK SY B N 2 By wiring draw | january 30, 2022. 2 STABILIZER B P RW B INTERLOCK SWITCH INDICATOR DIAGRAM 11 - 71/72 MGB HIGH BEAMS B U/LG R 3 B P R green W2 C1 R N LG/N FLASHER BRAKE FAILURE & LAMP SWITCH R 1 G P B B 3 P (GR) HEATER FAN 1 FLASHER COURTESY LAMP green WG Right WG B+ G UW P 6 R B R N W White SEATBELT green G (GR) B B CONTROL P N 5 U/LG INDICATOR G 3 8 P & INDICATOR (GT only) RW (UW) PW G 2 0 obj RW LG/P green Wire colors shown in ( ) are supplied as part of the B R FLASHER OIL PRESSURE B U N HAZARD green IGNITION GK I 1 (GW) B B 6 Purple CIGAR LIGHTER R ON - OFF SWITCH GW DIMMER GP PG P N Purple Green GK B RH REAR G G SWITCH N N/LG GY PW WB HEATER FAN MOTOR LH REAR LG Light Green LIGHTER GP U SEATBELT BUCKLE GP INDICATOR W White PB B FUEL PUMP LOW BEAMS HEATER Y N WB G B REGULATOR G P RW N N UR RW PB R CONTROL R W RN B RG S INERTIA U SPEEDOMETER FLASHER PW GK W Right R RADIO B RW R/LG B PB FLASHER SWITCH (WG) B B B G 7 FLASHER WIPER MOTOR N P SWITCH R/LG BATTERIES Brown WB 6 GB Ind PW R + GB SWITCH G W R P 2 If the wire comes in contact with the surrounding metal a . VALVE & SWITCH UW LH TS LG/N 5 G Left B LH TS CIGAR LIGHTER ILLUMINATION LAMPS TEMPERATURE WN RW FLASHER Black GAUGE VOLTAGE BUTTON GP ILLUMINATION LAMPS N * FLASH-TO-PASS UW Ind B RH FRONT G RW + RW B REVERSE LIGHTS G Green W2 W1 1 C2 N G B GB G R FLASHER STARTER ALTERNATOR GR B YO U L G B R RW Heater Box Refurb (6) LED / DRL Lighting (8) Parking Sensors (1) Radio Interference Suppression (4) Rear Antiroll Bar (7) Remote Boot Opener (2) spotlight (4) G N HAZARD LOW BEAMS B GN R SY G B 8 3 R TAIL LIGHTS & CLOCK Pink 2 FLASHER HIGH BEAMS B LAMP & SWITCH R 8 1 W/LG 4 W W HEATER FAN MOTOR HEADLIGHT SWITCH (WG) (S) PW 2 STABILIZER IGNITION GW YP * W HAZARD GW BRAKE SEATBELT G GN P GW 2 1 DISTRIBUTOR Orange B G Right B L WN B W1 C2 RG RW LG/G HAZARD GR (N/LG) N/LG OIL PRESSURE WG N LAMP G G NR N LH REAR W2 W1 P U R 5 4 Black PW GR B DIMMER & Blue G GW PK (P) N HATCH G G A dmp PUBLICATION 2005 Ind GW Purple N GP UW YR Right RG G *TS SWITCH MODULE SWITCH N R COURTESY LAMP RW N SPEEDOMETER G . P LICENSE PLATE LAMPS (WG) STABILIZER HEATER CONTROL RW W TACHOMETER HEADLIGHT GP G green RW G SWITCH FLASHER 3 HAZARD PW HAZARD GK PK FLASHER green WIPER MOTOR W 4 1 R TAIL LIGHTS & R G R SOLENOID RADIO TACHOMETER WB SOLENOID Ind G RN 6 SOLENOID 2 W W GP IGNITION RW 2 N DIAGRAM 7 - 67/68 MGB W WR WR R P B G WIPER MOTOR CIGAR R FLASH-TO-PASS G GR K SEATBELT BUCKLE STARTER W B GR Purple SOLENOID GU UW TURN SIGNAL B 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. 2 GAUGE B PW LG/N GP N P W2 C1 * indicates two switches combined in one housing L R G TEMPERATURE 2 P G B SWITCH DEFROSTER SWITCH G 8 N R F WL D E R FROM BENTLEY B B U 5 %PDF-1.5 WARNING LAMP LAMP GN LAMP & SWITCH RW LG/P HIGH BEAMS OVERDRIVE RW PW HEATER FAN green W DISTRIBUTOR L GY G P GB U G 3 UW G 4 (N/LG) BRAKE R/LG Black Blue (UW) HEATER FAN MOTOR LAMP These PDF files can print full size on 11" x 17" paper. P WIPER/WASHER G NB 3 (U/LG) The instructions supplied with these kits (usually pictorials) are quite clear if you are using these GM style components . B Orange HIGH BEAM INDICATOR GN * and indicate two switches combined in one housing B LICENSE PLATE LAMPS B LH DOOR (LG/N) B FUEL LEVEL B LIGHTS 2 W P EGR SERVICE TURN SIGNAL WIPER MOTOR W GW - B+ RW 5 COIL N G Y GR B WB FLASHER G G Slate (GK) GR G GW P P HEATER FAN GR GAUGE & DASH R B GAUGE VOLTAGE P SWITCH B TACHOMETER O COIL GP Disassembling and Inspecting the MGBEngine. SWITCH W B GR GN WR 2 N R UW SWITCH Green O Black (LG/B) P WG GK (GW) B P R R FUEL GAUGE & SENDER LG/G FANS RW U * FLASH-TO-PASS GN B SWITCH TRANSMISSION GP B LH TS HEATER FAN BATTERIES N GR DIMMER N LG/G WR RADIO B 2 Orange N N U 2 B R GAUGE & DASH LH FRONT B PB SWITCH & SWITCH - GT ONLY Removing Hub Nuts clockwise or anti-clockwise? Pink K W2 W1 R UR LIGHTS DIMMER & SWITCH 3 62/64 MGB - (from Bentley A8753AW) 64/67 MGB - (from Bentley B51798) 67/68 MGB - (from Bentley E1898W) 68/69 MGB - (from Bentley E2333W) 68/70 MGB - (from Bentley E2764W) 1 R RW RELAY REVERSE LIGHTS STARTER GR GR P U B B RW BATTERIES GW N W N SWITCH N B G In the MGB 70/71 wiring diagrams the purple is used as a feed wire from the fusebox . ILLUMINATION LAMPS W R STARTER W Left UR U O BATTERY R R P Wire colors shown in ( ) are supplied as part of the W B R P DIMMER HAZARD WB PW UW G RW B HAZARD N CIGAR LIGHTER B STARTER GN PW FRONT PARKING B 2 K FRONT PARKING 3 Left TURN SIGNAL B WIPER MOTOR N B P B NG GN SWITCH 1 (GR) W SPEEDOMETER R W TRUNK/HATCH B ALTERNATOR WARNING green TRUNK/HATCH Left BUZZER FLASHER - GW G B 4 UR Brown THERMOSTAT PW White The site costs me over $1,000 per month keep online and is totally reliant GR PK TEMPERATURE INDICATOR GP U/LG 1 RW RW BUTTON Also behind the dash panel is another Line Fuse for Hazard Flasher Unit Additional wiring needs to be provided from terminal 7 via inline fuses for the relays (if fitted) for B G B WR 2 GW W GR GW W 1 WB FLASHER R/LG NY P 3 (GR) PW RW G R (R/LG) W GEARBOX SWITCH R COURTESY LAMP G G NR REAR WINDOW DEFROSTER LAMP B ON - OFF SWITCH BRAKE SWITCH SWITCH RW GP B (UR) OIL PRESSURE ALTERNATOR A dmp PUBLICATION 2005 N 2 R GW 4 B 2 STARTER R WB HEADLIGHT N G B P B 2 B TAIL LIGHTS & RW HEATER FAN MOTOR HORNS R N From the 1977 / 1978 maintenance manual suppliment . R LG/N GR RH TS L STARTER LG/N OVERDRIVE GB HEATER FAN HEATER FAN B N 2 BRAKE SWITCH CIGAR LIGHTER INDICATOR LH FRONT 1 LIGHTER 5 FANS LIGHTER WLG RH REAR (UR) B B HEATER CONTROL RW R (P) RH REAR 2 R WIPER/WASHER LG/G 3 GY GK W PW GR *TS SWITCH & SWITCH Left B G LOW BEAMS Y MGBGTV8 B WR R HEATER FAN SOLENOID WLG GY Purple 2 RW B YN HEATER FAN MOTOR 4 GN P LIGHT/SWITCH B GP W BG B B GP B CONTROL B WN G R U/LG W1 C2 REVERSE LIGHTS & SWITCH UR G GW RADIO N LG/G LH REAR RW N FLASHER *These three switches are combined in one housing 2 W 1 B Pull the alternator plug and see if the draw disappears. WN B (UW) O & DOOR SWITCHES 2 GP endobj GN LG/P B Right SWITCH B RH FRONT GK P C1 W1 OVERDRIVE STARTER R W1 C2 + GAUGE ALTERNATOR CONTROL & DOOR SWITCHES W (G/K) FUEL GAUGE & SENDER (N/LG) R RW GN B LOW BEAMS UW LG/G Purple LIGHTS P W RW UR B Newer Post Older Post Home. = one pin of a multi pin connector. IGNITION COIL WN OIL PRESSURE B B DIAGRAM 9 - 69/71 MGB GN R FUEL GAUGE & SENDER GK TRUNK LAMP B GK SWITCH IGNITION GR P BRAKE SWITCH S SWITCH B G G PB 8 RG OIL PRESSURE Rubber Bumper #MGB - check you have the correct coil? W Green G B G L B P W GN Y R (N/LG) RW RW FLASHER 7 WG (GR) LAMP B PW W White 4 G RW G B N C1 C2 1 GW LG/G WB LG Light Green UW Right DIMMER & U WASHER MOTOR WG P *TS SWITCH P P G I REVERSE LIGHTS B B