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Hi, my name is ***** ***** these the running lights on the camper or on the truck?
ok,the towing lights have their own fuses and relays, seperate from the truck, do you have a test light or a voltmeter? I an help you diagnose this?
that will work, first off, in the fuse box under the hood, we need to check fuse F42, and see if it has power, when the lights are on?
and there is power on both sides of that fuse?
ok, in the same fuse box, there will be a relay marked "trailer tow/ parking lights" can you locate this relay and remove it?
yes, now on the bottom of the relay, there will be numbers stamped into the plastic, identifying each pin, they will be 30, 85, 86 and 87, do you see these numbers?
ok, in the socket the relay plugs into, we need to see if #30 has power at all times, and if 85 has power when the lights are on
ok,can you jumper 30 and 87, and see if the trailer lights go on?
ok, can you check the brown wire at the towing connector, on the truck side, with it jumpered? disconnect the trailer and check it there
so there is no power to the brown wire, at the trailer connector when the 87 and 30 are jumped?
ok, then the brown wire is broken, somewhere between the fuse box and the trailer connector, I would start at the trailer connector and trace it back, to find the break,Tim
on this, it will have power anytime the parking lights are on, and they come on with the key on this model, when power is applied to the 85, the relay closes and puts power from the 30 to the 87, which power the brown wire at the trailer connecor, since you jumpered the 30 to the 87, you have taken the relayb and everything else out of the system, if the brown wire st the trailer connector does not have ower when jumping 30 to 87, then it can only be a broken wire between the fuse box and the connector, nothing else,Tim
it could be, you need to check the brown wire at the fuse box, and see if it has power with the relay jumpred, if it does, then the wire is broke, if it does not have power, then its in the fuse box it self,Tim
Anytime my friend, Please dont forget to rate me so I cn get credit for helping,Thanks,Tim