Thank you for getting back to me. I took your advice and used a paper clip from the back of the plug. Made sure that I had good ground and, of course, made sure these new lights worked when plugged directly to the battery. I still find that neither gray wire has power when I open the doors. But I did find that the brown wire with the blue tracer did. I tested them all and a couple of the other wires had low voltage coming through when you open the doors. The brown wire was the only one that was exactly what I needed for dome lights. Not sure why this would be different on my truck, but it is. It was in the third slot from the bottom right in the plug when plugged in.