Day215 did you do a right up on flush mounting those tail lights? I have been wanting to do this for awhile instead of changing to round LEDs.
EDIT******this guy was way more motivated than I was, he took pics along the way. I did make sure to cut my template with a lot more precision. I wanted to see exactly where the light was going to sit when done, not just the portion I needed to cut out.
I didn't post a write up, but here's a quick overview.
#1: remove tailights
#2: make a template from cardboard, I placed the light lens down and cut out the outer shape on cardboard, I then carefully cut out the inner portion of the template to match the contour of the backside of the light. The backside of the housing is tapered, I just kept trimming until the template would snugly slide over the backside of the housing. You basically end up with a cardboard "ring" that looks like the shape of the light.
#3:mask off the area you think the light will occupy, I slid the backside of the housing just a hair under the rear wheel well.
#4: square up your template and trace the inner portion. Cut the inner portion out, I used a jigsaw but a dremel would work a bit better.
#5: stick the light in the hole and check the fit, trim as needed. Once your happy, mark the four holes that hold the lens to the housing, these holes will be the fastening points for the light to the body. A sheet metal screw will go thru the lens then housing then body.
#6: run a small piece of wire from a ground point on the chassis to the screw inside the lens on the chrome reflector part of the lens. The old way of mounting the light provided a ground for the housing, when you remove the metal that it mounted to, you need to find an alternate way to ground the housing to the chassis.
#7: I ran some clear silicone around the housing lip before i placed the light into its new hole and screwed it in. Smooth the silicone out with your fingertip to seal the housing to the body. Plug it in and test her out
My explanation makes no sense to me, your basically just cutting a hole and sinking the light into the larger hole, don't over think it! You will loose your side marker, these are required by law in most if not all states, don't call me if you get a ticket. You will also need to address the deletion of your plate light, I bought some by lights and installed them just above the plate, I painted the old clear part of the lens that acted as the plate light so it would not bleed light into the wheel well.