curt 56584 or 56070
56584 is for 5 wires and 56070 is for 7 wires. If you use the 7 it will give you an auxiliary "hot" wire but you will have to shorten the wires as the 56070 is used for a fifth wheel.
7' Custom Wiring Extension Harness (Adds 7-Way RV Blade to Truck Bed, Packaged)
There is nothing like the luxury and power that go along with heavy-duty towing. 5th wheel RVs offer a deluxe, home-away-from-home experience unlike any other, while gooseneck trailers possess a strength that far surpasses most other trailer options. As with any trailer, however, 5th wheels and...www.curtmfg.com
And did you have to cut off the connector from the curt harness on the end that would be connecting to the lights in order to connect the lights to it? Any pictures by chance?
Sent from my iPhone using Tapatalk