Anyone know where the fuse or replay is for trailer lights?

I had the trailer hitch and light harness installed on my 2003 Sedona last
spring. Now none of the running lights, turn signal lights and brake lights
work.

I know what caused the problem. I put one of those red lights in the
receiver and hooked it up to the trailer light socket. Cute, except that I
managed to back up into something and shorted out the lights.

Now I cannot find what to repair. All my car lights work just fine as far as
I can tell.

If I cannot get it solved it is going into the shop Friday.

Thanks