I used a relay with my first 5ver's reverse lights off the battery. On my 2nd rig I just went direct to the truck (because Cedar Creek had it pre wired) and used two 50 watt halogens.
This time around I went straight to the truck because these LED's are only 3 amps total. Besides having a short (which I did on first try
), there is no chance of the truck fuse blowing.
If you have a Ford the circuit for the trailer reverse lights is seperate from the trucks
I think I'm going to put a switch in to shut off the bu lights on the truck, like you said.
Now I wish I ordered the upfitter switches when I ordered my truck