Hello,
I'm hoping someone can point me in the right direction. The KJ was wired for 7-pin trailer lighting with the MOPAR wiring harness. It was done before I got it. Anyway, the running lights on the trailer quit working. Turn signals and brake lights work, but no running lights. After tearing apart and testing things several times, I have reached the conclusion that power is not being sent from somewhere in the front of the vehicle to the harness in the back, i.e. the MOPAR trailer harness is fine. All the fuses are fine, unless there are others besides the ones by the battery and the ones by the drivers' door.
In this pic, you can see a wire bundle going up over the right rear wheel well. This contains the black and red wire that is supposed to power the trailer running lights. So my question is: does anyone know where these wires go? They seem to disappear into the oblivion behind the dash.
This is the back of that plug, where you can see the black and red wire going into the upper left corner of the plug. Note, this is not part of the MOPAR trailer harness, it's part of the vehicle. Wires come into it from two different directions; most from the left side of the vehicle, and a few from that bundle in the previous pic.
This picture shows the MOPAR trailer relay bundle. The one second from the bottom is the running light relay. Power is supposed to come in through that black and red wire, then when the relay is tripped, flow out through the black and lime wire just above it, out to the trailer. Continuity testing has shown that the relay is working, there's just no juice to pass along. If I can't trace the black and red wire, would it be ok to tap into the wire that trips the relay to power the trailer lights? Because that still works. But I don't wanna make things worse.
Sorry if the pictures are huge. A big pre-emptive "Thanks" for any ideas!
