OK, I know the answer to this probably involves some plain old detective sleuthing, but here goes...
While driving home from Florida, our running lights
on the trailer suddenly quit working. I discovered that they are wired through the harness to the license
on our VW Eurovan and the fuse was blown. I tried a new fuse and blew it again. Then I put in a larger fuse and the TV license
stays on but more dimly and the trailer running lights
still do not work. The TV license
works fine when the trailer is unhooked.
So... I'm assuming that I have a short somewhere in the trailer or wiring harness of the trailer. Right? When we get home I'll take the bed down and open up the area under the rear seats to see if any connections came loose. Everything looks OK on the outside, but it could be a bad plug, too. Ah, the fun of old trailers!