i have 2006 ram 3500 diesel, the rear fact. wiring was working good coming out of truck,then i got a short in trailer, it was left side brake turn signalls, i repaired the trailer and checked the fuse for left side not burnt but i replaced anyhow .....still left turn and brake on any trailer does not work. the running lights do and right side works well, i checked rear of truck and no power at outlet? ..any help?????