About a week ago the running lights on my bass boat trailer stoped working. Naturally, I ripped out all the old wiring and replaced and installed new LED lights. I finnished the job and then hooked the boat back up to my truck with new wiring and again, no running lights. I got out the 12V circut tester and tested the 4 pin, I have signal to right and left indicator and breaks but NO signal to the running light pin. I have checked all the fuses and appear to be fine. I testesd the trailer light with two other vehicles and the running lights on the trailer work with thoes vehicles.