The question I have is your high beams turn on the LP4s and they are not street legal - do you turn off your high beams at the first sight of other headlights? Not very many winding roads were you live? How does that actually work while driving on the road (angry drivers flashing at you)?Got my LP4's installed today - I first ordered the JL steel bumper version with the upfitter harness but they are not available to ship until November. Found a set with the standard harness and I re-worked that to hook into my AUX1 switch.
First I cut the last leg of the wiring harness away from the relay, fuse, switch, etc. leaving about 4 feet of harness for each light. I removed the sheath on the white/black pair, and also the yellow (backlight) wire, and then inserted the yellow wire's deutsch terminal into the existing deutsch connector block for the white/black pair (remove the green 'keeper' so it seats all the way in). I then used the larger sheath from the switch leg of the harness (the one with 3 wires running through it) to keep everything together. In essence I made a short upfitter harness using the pieces from the regular harness.
The length was fine because I created my own wiring harness using 12 and 16 gauge primary wire to go from the aux wire location, under the air filter housing, and down along the right side of the grill to the bumper. I have the AUX1 going through a relay hooked to the high beam wire on the passenger side of the vehicle, shown here:
and a posi-tap connector:
Here's the thread on tapping into the high beam circuit:
The backlight is connected before the relay so they come on when AUX1 is on, and then the LP4's light up when I turn on my high beams.
They are a sight to behold at night for sure.