Heres a quick DIY that wont bend or disturb the headliner.
Starting with headliner
Remove (2) plastic rivits just in front of back glass.
Remove coat hangers on both sides, phillips screw.
Pop out light assy's on both sides, can let them hang.
Pull back the door seal from about where handle is inside, to just about the bottom of door corner. Can leave hanging.
Seat Belt trim removale
Fold both back seats foward and flat.
Remove both plastic rivits above where seat back was covering them.
Open the rubber boot (up) on belt latch to expose nut holding it to pillar.
Swing removed latch out of the way, down.
Grab the plastic trim now, and pull towards inside of cab. There will be (3) clips that will pop out, closest to door way, and (2) alightnment clips holding edge of trim next to window, in place.
Repeat for other side of truck!
Removing stock 3rd light; installing Lightning light
By now headliner will have lots of play, hanging down a bit inside cab.
Gently reach up and in (passenger side) to dissconnect the plug.
(Will have three wires, green/black/black with stripe)
Remove (2) phillips screw holding light outside of truck.
Pull assy. out.
Reverse steps to install your new Lightning 3rd light!
PUT EVERYTHING BACK TOGETHER, LOL!
Came out perfect, and headliner not even one small crease.
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