I bought a 2015 transit cargo van for a camper conversion. The 4 halogen cargo lights never come on. Not when I use the key fob or when I open side or rear doors. The guy I bought the van from said they worked for a time and then stopped, he didn’t elaborate. All fuses seem to be fine but I’m not sure I checked the right places. All 4 lights have power. I was reading that the dome lights have a ground controlled circuit. Electrical is not my strong suit. Do I have a bad relay? I was hoping to move the rear door lights under my bed for rear storage lighting and for that reason I like the idea of a door switch. I know these lights have been talked about a lot but I couldn’t find any info that helped me with my problem.