electrical problem

[berg bronco]

Heh guys when I step on my brake pedal the right brake light comes on and the front left turn signal comes on. I have checked for bad ground and have all new bulbs. if you have any advice i would appreciate it.

[blazinchuck]

what does it do when you have the running lights on? that sounds odd,Chuck

[broncomatt]

It honestly sounds like a wire has chaifed threw. Check the harness where it runs along the the rear of the frame. If the brake wire has rubbed threw too the turn signal wire it could back feed to the front one. Also, check to see if the trailer wiring pigtail is damaged.
Broncomatt

[chuzie]

should he check for continuity between the two lights?

[broncomatt]

For the brake signal to go to the front the wire must have come in contact with the turn signal wire. I would think there would be continuity between the turn signal terminals, assuming the turn signals
still work.
By the way berg, what year bronco are we talking about?

[berg bronco]

It does the same thing when the lights are on everything works the way it should Ive looked at the wiring in the back it all looks good when I put my tester in the rear connectors im getting power through the ground
with the brake switch on

[berg bronco]

its a 71 sport the turn signal cam is working the way it should

[bucketobolts]

I'd look at the left rear tail light again. I'd double check the bulb and the socket.

I had a similar problem once on Trans Am. All lights appeared to work correctly, except when ever you would apply the brake or right turn signal the headlights would flip up and down. Had a fault "new" bulb with the elements crossed inside. So it would back feed the park lamp circuit when ever the bright side was powered.

[JayT]

I'd look at the left rear tail light again. I'd double check the bulb and the socket.

I had a similar problem once on Trans Am. All lights appeared to work correctly, except when ever you would apply the brake or right turn signal the headlights would flip up and down. Had a fault "new" bulb with the elements crossed inside. So it would back feed the park lamp circuit when ever the bright side was powered.

x2... faulty bulb.

[berg bronco]

Hey guys thanks for all the advice. I think I might need a new tailight housing I am also thinking of getting a new wiring harness. Are they as good as they say they are, are they pretty easy to install and which one do you guys recommend?