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brake light question


Guest flaresideone

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Guest flaresideone

Recently replaced the entire brake system on newly purchased 48 Ford F1.

now when I checked out the brake lights, they work okay with no other lights on but when I turn on the park lights and hit the brakes the one tail light goes out the other is okay, where do I start to check the wiring, Electrical is not my cup of Tea so to speak. Also turn signals work fine rear lights were replaced and new bulbs where installed.

Thanks ahead of time

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  • 3 weeks later...

It sounds like you may be missing a ground on the tail light that goes out. The green wire goes to the stop light / turn signal element and the black wire goes to the tail light. The ground is through the socket to the case and then to the frame of the truck.

Take a wire with an alligator clip on both ends, clip one end to the frame of the truck and use the other end to probe the socket, housing and bracket.

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