First, I decided to work on the right brake light, since that's a priorty over the two reverse lights that are still OOC. I drilled out the two rivets holding the can in and with a slight tug, the can came out. After a quick inspection I determined that the can wasn't too corroded, most of that being on the bottom. Took a wire brush, file, and sand paper and cleaned it up. Then applied two coats of black Rustoleum spray paint. Next, I soldered a small wire to the socket (bought a new one at Pep Boys) and crimped a loop fastener to the other end which was then attached to one of the mounting screws (I used screws instead of rivets to mount the can). Works great. Whooopeee!!
I got lucky with the running lights. One of the previous owners replaced them all with Peterson LED running lights with the tiny size 193 or 194 LEDs.
Today I ordered 2 clear and 2 red tail light lenses from Oasis RV. The old lenses were stained, dull, and scratched in some places. They definately needed replacing.