Only 1 brake/ turn signal works

[Paul Bruchal]

My driver side tail light works fine. My passenger tail light only lights up when the headlights are on. The Front turn signal on the passenger side works too.

The only thing is the passenger tail light blinker and brakes don't work, all lights are fine.

I replaced all the bulbs and flasher relay that's next to the fuse panel. Before the front passenger didn't work either but replacing the replay made the front work too.

I am very confused.

 

When I went to replace the stereo, their was a rats nest of crappy wiring job that was done and wasn't even necessary. Their is another crappy wiring job for the trailer light connector too stuffed into the rear bumper. I'm thinking my problem is the trailer harness wiring.

[onlyinajeep726]

I'm thinking my problem is the trailer harness wiring.

 

Remove that and report back.

[reubj]

I had a similar problem and it was from a trailer wiring job done by the previous owner. Clean that up and check the factory harness connector under the bed just behind the gas tank. Mine was very corroded and contributed to the problem.

[Pete M]

I had a similar problem and it was from a trailer wiring job done by the previous owner. Clean that up and check the factory harness connector under the bed just behind the gas tank. Mine was very corroded and contributed to the problem.

 

 

x2.  that connector was bad in my 88. :(

[Steve Gregory]

 

I had a similar problem and it was from a trailer wiring job done by the previous owner. Clean that up and check the factory harness connector under the bed just behind the gas tank. Mine was very corroded and contributed to the problem.

 

 

x2.  that connector was bad in my 88. :(

 

x3 Had to replace that harness in my 89

[Paul Bruchal]

Thanks for the input! I will try to remove the wiring and reconnect the wires back to factory locations this weekend. And Ill report back lol