I have them all marked for installation. If lucky they will come on with running and parking lights. I know in 2006 the 3/4 tons and up have the 3 lights as an option but I like the 5 lights. These are Pace for earlier Chevys.

I'm not really sure why you would want to wreck a perfectly good clean looking roof skin with cab lights but they do look better than the ugly tow truck light that they have from the factory.

The individual lights are definitely much better looking than the afore mentioned "tow truck light". That factory center 3some is butt ugly!! The wiring is probably in the headliner already for the lights. Maybe it will be easy !

I have the lights installed. So that I did not have to take the headliner completley down, I made home runs of the hot and ground wires from each light back to the drivers post. I will connect the grounds to that pillar and all the feeds to one wire before taking it in under the dash. I need to test the existing wiring when the headlights and taillights come on. Book shows a Brown wire-- have not found it yet or at least verified that it is correct. More testing.....