P H

I couldn't find anything through search and I'm baffled.

First the right brake light went out. I bought bulb and exchanged it. During test the left brake light stopped working. 3rd brake light works. All other lights in the back assemblies work.

1. I exchanged the turn signal switch -> nothing
2. Now working through the wiring diagram tested the wires. In both sockets ground wire 8 + socket wire 1 has 12V. Ground wire 8 and socket wire 5 show nothing.

I'm confused why the brake bulb gets 2 positive wires. Ones comes from the brake switch and the other from the MODULE INTEGRATED POWER (where is that?). There is another 10A fuse but I can't find it.

I also looking for connector C105. It says UNDERBODY SIDE. But where is that?

Any help is appreciated.

Noah911

Both the left and right brake light sockets showed a disturbance, and went out. You said the third brake light works fine, and has not shown a disturbance. Are you able and is it possible to, have you checked for the readings at the known good working brake light? To compare those readings at the good brake light to the readings at the disturbed left and right brake lights.. It is a start, and it is something. I do not know much about the WKs.

P H

After chasing the connectors without success I fixed the issue by wiggling the lamp sockets in the tail lights. Looks like the connections in the connector bracket are somewhat corroded or lose. Will see how long it lasts.

Noah911

I recently replaced a tailight bulb on my WJ. I used this stuff that came in a little squeeze packet, putting it in the bulb socket connection to help prevent corrosion. It is probably just dielectric grease, but it was specific for light bulb socket connections. It was maybe $0.75 found at the counter in the auto parts store where I purchased the bulb.