Need Help with rear brake light harness

[gran coupe john]

I got no dash lights, or brake lights. Although I have key light, and light by headlight switch when I open door. I don't know if this module has anything to do with the brake, and dash lights?

 

[Challenger RTA]

Do your headlights and parking lights work?

 

[Chryco Psycho]

Brake lights are often traced to a problem in the turn signal switch

 

[gran coupe john]

Turn signals come on, but don't flash. Did not hook up head lights.

 

[Challenger RTA]

What said Chryco Psycho is true. I question this. If the headlight are working then there is enough power for everything to function properly. Low battery or terminals bad connection + and - . Bulkhead connection good and both under column connections good.

 

[gran coupe john]

Brand new battery, got juice in brake light connection.

 

[Challenger RTA]

When motor is not running power is supplied by battery. Travels from battery to bulkhead connector 16 to red wire A 12R to amp meter. Follow the blue and yellow dots. Then to 12Bk to splice one. This is where it feeds all the loads or circuits. The headlights are feed from splice 1 through the Black wire white tracer. Q3 12R One red wire from splice one feed the battery side of the fuse box. J1 12R The other red wire feeds the ignition sw. Follow yellow dots. The Black wire R6 12BK Blue dots comes from the alternator. It supplies power for the load and charging the battery. BE AWARE! When the key is on there is power the alt terminal. This a summery of the power supply. Don't forget about the ground.

 

[Challenger RTA]

With a test light. Check the turn signal sw connector for power while plugged in. Go through the functions and see what you get. The horn connector is a ground for the horn relay that you pulled out.

 

[Challenger RTA]

Brand new battery, got juice in brake light connection.

By chance did you try unplugging both brake plug wires and jumping across? The turn signal flasher is attached to the side of the ashtray. 4 way is on the pass side steering column.

 

[Steve340]

The relay in your picture looks like it could be the horn relay.

 

[gran coupe john]

We will be starting it tomorrow. Hasn't ran since 97. Wanted to get some of the wiring fixed before it gets finished painted.

Thanks, for the trouble shooting, will try this tomorrow. Will keep you posted

 

[Challenger RTA]

By chance I was having 4 way issues. Sometimes they don't work and you go to check it, it works. . The 4 way sw gets power from the pink wire from the flash, that is also power for the brake light. I pushed on the pink wire terminal and it works for now. The white wire from the brake sw completes the brake light circuit through the sw. I marked the pink wire 4 white wire R and the green wire L. The fix is to get a new turn signal sw.

 

[gran coupe john]

Thanks for telling me that is a horn relay!! It does have 2 horns.

 

[gran coupe john]

Never had time to mess, with the mess on the wiring. Worked on starting the car. Had no luck with that either.

 

[Challenger RTA]

Test at the resistor. Unplug the brown and blue wires. Run wire should be hot when ing in run position. Start wire will be hot when holding in start positions.

 

[gran coupe john]

Still haven't got a chance. Wish I had a hand with this.

 

[gran coupe john]

Took wires off resistor. Blue wire seems OK, but brown wire??

 

[Challenger RTA]

Brown wire is the start wire. It only has power when in the start position. It applies full voltage to the coil when starting.

 

[gran coupe john]

Had it in start, no juice

 

[Challenger RTA]

Check the bulkhead connector 22 brown wire and under the column plug.