Hey guys i need some help, friend of mine is planning on installing the new body style slim LED style cab lights on his truck. He currently does not have cab lights but he does have a wire harness above the headliner for a visor he had. My question is if anyone has any tips or tricks to line them up and center them like they would be from the factory. Trucks going in for paint next week would rather have them laid out and drilled before paint.