Brake light wiring diagram please?

BOB57HDT

MEMBER
2003 DODGE CARAVAN

Brake lights do not come on when brake pedal is pushed. I have turn signal lights, running lights but no brake lights. I have checked the fuse in the fuse box under the hood and have replaced the brake light switch, even though it checked out OK. I read that there is a left and right brake/turn signal light relay but I cannot locate it. Does not seem it would be that in that both turn signals work but not the brake light. Are the brake light bulbs and turn signal bulbs the same? The high brake light on the rear hatch does not work. Took it apart and bulb is burned out. No markings on bulb, will have to find out # so I can replace it. Will that make all brake lights stop working? I need help. Any suggestions guys? Bob

3 Replies

JDL

MECHANIC
16,098 POSTS

Hello, does the high mount brake light work? At the brake switch, the gray wire with red tracer is the feed circuit to the switch, hot all the time. White wire with tan tracer is the feed to the brake lites. Check both circuits with the brake switch activated. The high mount brake lite shouldn't effect the others. Check the white wire with the tan stripe at the rear for voltage, with the brake switch activated. If you have good voltage, check the ground. Did you check the bulbs and everything at the rear?

Here are some guides and wiring diagrams so you can do some simple testing.

https://www.2carpros.com/articles/brake-lights-not-working

and

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

And so you can double check the fuses #26

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here is the the brake light wiring diagrams so you can do some easy testing and see where you lose power at.

Please let us know what happens.

Cheers

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