I recently purchased a 2004 Ram 1500 quad cab. It has the factory installed towing package. When I connect my trailer, all of the lights work except the turn/brake lights (both left and right). I have checked the fuses and checked for power at both the 7 and 4 pin connectors. There is no power at either one. I verified that there is power at the fuses as well.

Any thoughts on what could be wrong?