Black89

Ok so a few months back I got rid of the stock interior lights and upgraded to LED panels. Well I work for a company that installs, repairs, and maintains car washes and we used my XJ to do some test washes on a unit we were doing some tweaks to. It wash a high pressure touchless unit and now my interior lights are not shutting off all the way. I say not all the way because when I shut the doors I still get @ 7.5 volts going to the lights. I'm guessing it's either one or all of the door jamb switches or the head light switch. Anyone else come across this before or have any idea what the exact cause could be?

Thanks as always