What is up with my brake lights???

30

Asked by Dec 03, 2014 at 05:45 PM about the 1986 Toyota Pickup

Question type: Maintenance & Repair

I own an 86 toyota pickup, but just the chassis with a motorhome built onto it.
The brake lights do NOT work with the headlights OFF.
When the headlights are on, the brake lights are stuck on.
Brake switch seems to be working fine, no blown fuses. What is going on?

9 Answers

6,735

in your brake light there a two filaments is on of them broken

30

nope, they are both fine

30

when the headlights and taillights are on, the brake lights are stuck on. when everything's off, the brake lights won't come on

3 out of 3 people think this is helpful.
142,885

When the brake lights are stuck on, headlights on, are the taillights also on?

1 out of 1 people think this is helpful.
142,885

I had mis-worded that. I am thinking some crossed wires...this really is confusing.

142,885

Turn signals work ok? Or are they a separate fixture on the RV body?

30

turn signals work okay, they are on the same fixture. i am thinking crossed wires of some sort too... been delaying following wires through the whole body. i'd rather not do that

142,885

Don't blame you on that. Time consuming and need patience. I just can't think of anything it could be, except crossed wires, one touching another that should not be, something that when you find it, it's a DOH! moment

30

is it a gound issue? my t100 would have tail lights, left would go out when light switch on and brake pedal applied. right worked fine, left would illuminate if tail lights weren't on (dimly) found broken ground at lamp socket. good luck, sounds like test light and meter time.

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