I'm helping a friend get his utility trailer working with his Jeep. As usual, the Number One Problem with the trailer was poor ground return, so we ran a wire all the way around, connecting each light
fixture to it.
Looks like we have it working OK, but discovered that I have something wrong on my truck's wiring and his Jeep's wiring. Since opposite sides are not working right, the trailer seems fine.
I looked at the guy who wired my truck this morning in the mirror and roundly chastised him...
I started checking out the wiring on the Jeep (factory tow package?? Supposed to be, but the diode block for the tail light
conversion was just tapped into the light
wires inside the left rear lights
assembly (diode block seems to be the culprit, power going in but not coming out on defective light side). Pretty crappy job for factory, however, the 7-pin Pollack connector has all six wires hooked up to it and the color code is correct.
So, I am wondering where the trailer brake and battery
charge wires came from on the front end of the Jeep?
In the OM, there is mention of a trailer relay, which I haven't found, and there is even an equipped fuse for it, but all the relays in the underhood panel are accounted for and there are no relays in the interior fuse panel, nor are there any fuses in either panel for battery
charge or trailer brakes
.... I see no strange boxes under the hood -- I haven't checked under the dash for a brake controller harness.