Need help with HITCH WIRING

[Oz_Racing]

So i have a 02 x5 came with a hitch i bought it used but i dont know where to look for the wiring its not the oem hitch so the wiring is not right next to the platform but i need to find it asap got track day sunday gotta get the trailer today


PLEASE HELP

[Oz_Racing]

ok so i have read a lot and found that i don't have any wiring for the lights :'(

Thanks for looking