The headlights mount in the stock location to tabs already molded in the plastic with 3 screws and a spring between the headlight and plastic.
If anyone needs pictures or has questions post up and I’ll do my best to answer them. I bought the lights new from my dealer that were for a 2014 850 xp with eps part number 2878542. The harness I found on amazon but I’ve seen them on ebay too which again was part number 2878624
Edit for prices: the harness I got off Amazon was 49.99 and I bought my lights from the dealer they were I believe 449.99. You could save a lot of money on the lights with some used take offs on someones RZR or Scrammbler from what I read. I wanted new parts though cause i’m picky.
Also a note: You do not cut or damage the stock light harness in any way so it is totally possible to put it back to the stock housings and wiring if you desired. I was really happy with the light output of the LED’s and one HID bulb in the stock handle bar light. I mainly wanted the LED’s because I feel the HID’s can be unreliable and they are instant on and off vs HID’s