Hey guys, I had an issue a couple of weeks ago where my trailer brake, and signal lights worked just fine but the running lights for night did not. I bought a tester and found the plug on the truck to be bad. I put a new 4 pin plug on the truck and that fixed it. Last night I noticed the same thing was happening again brakes and signals work but again no running lights? I checked the new truck plug and again its not putting any juice to the brown wire? I figure I will put on a new plug one more time but if it goes out what would be the cause? Any ideas?