Tee Connector maybe? Lance wire diagram
As you can see in the above photo there is a "5" pin connector that lance uses to go from camper wire harness to bumper lights. I use a deck on my camper and run lights on the back of there...
Forum Discussion
Does your Lance go in to a dedicated connector on the truck or does it use the trailer connector? If the camper has its own connector, you can plug your deck into the trailer connector. Since the trailer and deck are exclusive of each other, there would be no need for a T connector or Y-cable.
