I bought these headlights for my 2015 F350 SuperCrew Long Wheelbase Pickup. The two smaller 4" headlights I installed as backup lights and attached to my headache rack. A 20" rod was attached to the front brush guard. The wiring harness that came with it was good (and probably works fine), but I don't have it in my application used as the harness wires are too short. They would probably fit a small quad or compact car, but not a full size pickup where the cab floor alone is almost 8 feet long. Also, my car already has upfitter switches on which already have relays attached which I can connect directly to without another relay.The brackets are metal and are great for attaching flashlights.After I run my own 12 gauge wire to the relay switches and the negative wire with a solid ground I waited until dark to see the improvement and was very impressed t from the light output. The two 4" headlights were more than enough to light up a large area behind my car and the 20" strip in front was brighter than my factory headlights! Very good starting product.
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