I added this light to my truck. I did not need ay additional parts. The part has 2 wires coming out of it - I extended those a couple of feet to reach the wiring block. I used 2 stainless steel #8 screws to mount it. I had to drill a large hole (about 5/8") for the wires to pass thru. So total drilled holes - 3.
Mine came with a plug on the wires and has two clips on the back in addition to the two screw locations. Wish I had a part number for the section of harness that the plug attaches to.
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