The Van Won Upfitter Wiring Harness has been designed specifically for vehicles with factory up-fitter / uplifter switches, including Dodge, Ford, and Jeep. 
This harness simplifies installation of all of our Baja Designs lights. It can also be used to integrate switch panels such as Switch Pros or sPOD units. 
If you plan on using two Squadron, S2, or S1 lights on a single harness, you'll also need our 2-pin splitter.