I installed new LED lights/wiring and backup lights/wiring on my trailer. Wired everything to a 7pin connector and the blinker, brake and backup lights work fine. However, when I turn on the running lights it blows the 20Amp fuse in my truck for the trailer lights. I isolated it to the trailer but since the wiring is all new I'm not quite sure where the short it could be. All the lights are grounded with the white wire and the marker lights which are Blazer LEDs have a small metal tab which connects to one of the screws holding it in place, I assume that is the ground When I connected the running lights to the 7pin connector I took the green/brown and yellow/brown wire and connected them to a single post on the 7pin. Could that be the problem?