Chrysler Repair: 1996 Cirrus Brake lights wont work, center does, neon 12v, glow lamp


Question
Hi Roland,
My brake lights went out and I have change the bulbs on both the left and right sides, and they still wont work.  However, when I put a new bulb in the middle brake light on the top of the trunk, it stayed on constantly (while the car was running) until the bulb blew out.  I have been hearing the dreaded "electrical problem".  Please help.

Answer
Hi Loretta,
I have checked the wiring diagrams and find no single explanation for what is going wrong with your brake lights. There is a single wire that carries the current for all three lights from the brake pedal switch to the rear of the car.  There is a splice at the back edge of the left rear door opening (in what is called the C-pillar, hidden behind a trim panel, about the same height as the seat back) where the wire splits in two: one wire goes to the center lamp, and the other wire goes to the rear brake lamps (first the left brake lamp and then over to the right side brake lamp. The wires for this circuit are always white/tan in color for identifiation purposes.
The only way your history would make sense to me is that the switch on the brake pedal is out of adjustment (is not being pushed in by the brake pedal lever when the brake is not in use) so the brake lights circuit is constantly powered up and that would be a simple matter of adjusting the position of that switch which is mounted on the brake pedal assembly under the dash.
The question then is why don't the other two brake lights work and that is because of the white/tan wire at the left side rear lamp assembly having come loose from its attachment point at the black 6-pin plug at that assembly (pin #6 is where it should be attached). You can check out my theory with a volt meter of a neon 12V glow lamp. The only other explanation is that the white/tan wire that goes to the left rear lamp is disconnected at that door splice or that it has been severed between the spice and the left rear assembly due to fatigue or physical insult.
Let me know if you need more information, but I don't believe this will be a costly fix if you have a mechanic who is competent with wiring, or an auto electric repair shop where they can sort this out quickly.
It has to be two separate causes as there is no explanation as to how only the center will light up constantly while the others don't work, except for two separate issues, both of which are easy to fix. You can take a copy of this to a shop to help them do the repair.
Roland