Trailer running lights question

[bassarama]

As I was replacing a coupe of lights on the trailer, I realize that my 98 Dodge Truck has no power to the running lights, I mean the wires are connected and everything looks like it was done professionally, however the 12 volt tester shows no power on the running light pins. Only the brakes and blinker lights work.

First I though the trailer wires were bad, but connecting the trailer on the Tahoe everything works fine.

I have yet to trace every piece of wire under the truck, but from what I can see so far, the wiring looks sordid and like I said it was done by a professional perhaps from the manufacturer.

I've check the fuses and every one seem ok; I'm leading toward a separate fuse and /or connector under the firewall...

Have you experienced such problem or know of any possible cause that would lead to this?


Thanks

Joe