Just as was said above, there are two bundles of wires. Each bundle has 6 wires color coded per the upfitter switch diagram. One bundle has powered wires from the switches. (These are what you connect to for auxilliary lighting). The other bundle runs back to cabin if you want to hook up a device inside truck. You will have to connect powered wire to the non powered wire to get power in cabin if needed.
So, to hook up led light to aux switch 1- very simple. Connect the RI black and red cables to the battery posts (pos and neg). Take the RI switch wires and use only the blue wire. Attach the blue wire to the Green and blue ford upfitter wire. (The powered one). The powered wires are to the left on my truck as looking from front.
Very easy. Make sure truck is on to check if working.
I wired the 30" rds and the hyperspot to auxiliary 1, with the pos and neg to batteries. Both harnesses came with built in relays. So I am only powering the relay with the upfitter switch.
For the two small lights, the RI harness only had a fuse, no relay. So I cut all that off, and just used the main wires. Both red wires to auxiliary 2, and both grounds to battery negative. The 15 amp upfitter switch powers these two lights.
Seems to work well.
I dropped both of mine for easier access. Just look for the same colored wires a couple inches away on the same loom the original was taped to!
