hopefully you have 2 wires, one hot one ground. depends on how you want it to work, some sound bars have an on off switch on the light and you can just wire it into a hot wire. mine didn't so I wired it into the interior lights on the passenger side. I took my test light and found the wire that was hot when the door was open, dead when closed, I just spliced into it then grounded the other wire to the body. the light works when the door is open and also with the switch.