Anyone know if there's a separate fuse for the factory installed trailer wiring harness?<br />I've been having problems with the trailer lighting. I replaced it and have the same problems, such as dim turn signals when the running lights are on. Last night, the fuse for the instrument panel/running lights blew - I replaced it. I'm convinced it's not the trailer wiring. I replaced the short 4 wire harness on the van today and one of those plug in light checkers didn't show any operating lights. I disconnected that harness and used a 12 volt continuity light on the factory harness. With the clip to the ground wire, I didn't get a continuity light when I touched the probe to any of the other bared wires (run,turn, brake). The owners manual doesn't mention anything about a separate fuse and none of the fuses listed in the operators manual or fuse panel indicate they'd control the trailer wiring.<br />The van lights work OK.