Of you are referring to the cap on the back of the light house of not sure if yours has it mine was a Gmc with projector lights drill a 1” hole and feed wires threw it and the kit should come with a gromit to cover hole that keeps all the crap out of light houseong
and I had all hids and leds in my truck never an issue with them being leagel or illegal cops don’t care about head lights that whole law thing is a joke and it’s state by state and they must be fine since I pass inspection every year with them