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MG Car Repair/72 MGB headlight wiring

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Question
Hi, I have a butchered front harness and need to know what wires work the headlamps and possibly tell me the connections. Thank-you.

Answer
Hi Bob:

In the wiring you find each wire with a color and a "tracer" color along the wire which identifies what it control/hooks up to. First color is the main color, second is the tracer color. In the case of your headlights:

headlamps - plain black is always to ground. You should have a blue/white and a blue/red wire to each light.  one is for the low beams and the other for high beam. They wind their way back to the High/Low switch, h/L flasher, direction indicator switch on the steering column.

If you have a owner's manual it should have a wiring diagram in it for your 72 B. Other maint books also have the diagrams. Trying to sort out wiring without a wiring diagram is a sure way to madness!  maybe a search on the internet will draw one up as well.  Good luck!

Brian

MG Car Repair

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Brian Warmuth

Expertise

General questions regarding most MG autos from 1950 through 1980 - primary are the TD, MGB, Midget and MGA.

Experience

Over 30 years of working on and restoration of MGs

Organizations
Ohio Chapter New England MGT Register, AACA

Education/Credentials
BA, and MS, from WVU

Awards and Honors
several local regional awards for restorations

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