Decided to give this a go this weekend. Worst case I'm out ~$100 if I royally ****** it up. Bought the same stuff that @
Nick@Apollo-Optics has pictures above from hobby lobby. I read through most of the other forum thread that was linked
here and decided to pick up the black RTV gasket to seal the paint in as well. Acrylic is a pretty tough paint but these cracks accumulate a ton of dirt and water.
The biggest pain in the ass of this is chipping out the old glue/melted plastic from when the lights were assembled at the factory. That shit was tough and a bitch to remove from the tiny crack. Biggest thing for a nice finish is prep work so I took my time to remove every little piece with a box cutting blade.
Loaded up the fine tip bottle with the glossy black acrylic paint and just injected all around the opening making sure it bled all the way down to the edge. Then followed that around with a stiff bristle brush to paint the easy to reach surfaces. This applicator made the tail gate edge super easy to fill in. Overall I put in 3 total coats of paint with the applicator and brush. Two bottles is enough for 4-5 coats but I called it good.
Once all coats dried overnight I followed it around with an initial layer of black RTV. I used the brush to press it all down deep into the crack and spread it out. I followed that with a thick 1/8th bead all the way around and smoothed it out with my finger. Both lights now have a continuous rubber seal over the paint. Hopefully this will make it last for the life of the truck. Pictures below show the final layer of RTV. I don't have any of the process as I was just focused on doing it clean with no problems. Waiting for this gasket to dry then will install.