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Technical Area => Electrical Items => Topic started by: june2021 on April 24, 2021, 11:36:14 AM

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Title: Headlight Switch
Post by: june2021 on April 24, 2021, 11:36:14 AM
This may be a long shot, but I inherited a 1975 MGB. Could you give me some possible solutions for a problem I am having?

Anytime I turn on the headlight switch, the fuel pump and ignition system are activated. So after starting the car, if I turn the headlights on, and then turn the key completely off and remove it, the car will run until I shut off the light switch.

Have any suggestions?
Troy Spang
Title: Re: Headlight Switch
Post by: JohnTwist on April 24, 2021, 11:45:16 AM
It might be as simple as faulty fuse box wiring.  This is the way the fuse box SHOULD be:

Forward side (right side as you’re looking over the fender):
Top    Red/Green
Two    Blank
Three White
Four   Brown

Rear side (left side as you’re looking over the fender):
Top    Red pair
Two    Red pair
Three Several greens, perhaps paired
Four   Purple

If you have other wire colors or homemade wiring on the fusebox, send me a picture.

Hope this helps!

SAFETY FAST!
John H Twist
University Motors Online
100 East Beltline Avenue SE
Grand Rapids MI 49506-2410
Cell: 616-307-6737
www.universitymotorsltd.com

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