I had seen these on some pickup trucks lately in my travels. So I purchased the led strip kit on a low bid ebay sale, bargain
It plugs into my trailer harness plug except the reverse wire needs feeding into the brake light reverse light wire.
I used a 18 " pc of piano wire with a tiny loop on one end to fish the wire up into the brake light compartment. Took a few tries ..https://vimeo.com/119081356
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2002 E250 5.4 4R70W 2wd 3.5 inch lift Pleasure-Way Traverse on 16x8 with 265/75/16's