I Purchased a 4 wire 18 gauge solid copper sprinkler wire at Lowes. It has a white, blue, red, & green wire inside a thick black covering meant to go underground so I figured it was good protection for the wires going back to the connectors. Because the 4 wire is a little stiff it is very easy to fish up and over the rear wheel liners. Just before and after the wheel liners on each side towards the top there’s a small ring where you can zip tie the wire on each end of the wheel liner. I grounded Everything on the white ground wire at the Curtis trailer harness I attached to the back for my OPT7 Light bar.
The green and yellow wire coming from the white bed light wire are for each side of the light bars on the other ends of the 4 wire.
I ended the other end of the 4 wire where the cab and bed meet on each side. I then used waterproof connectors to connect the light bars separately to the 4 wire. That way I can change out the strips if they go bad instead of having to re-run the wire over the wheel liners. I hope this helps.
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