Now that I've got the garage to some semblance of 'usable functionality', I broke out some of the smaller subassemblies for the Supra that need work. I have all of the passenger side mirror, minus the M5x.8 screws that hold the mirror to the car (new ones on the way), so I started scrubbing away on the 'rubberized' mounting bracket that holds the plastic mirror housing to the door.
Hot, soapy water, a toothbrush, and some Scotch-Brite for that "really ground-in!" dirt. Then after it was completely dry, I scrubbed a heavy coat of Mother's "Back to Black" trim cleaner and reconditioner into it with a new "99cent Store" toothbrush. Several hours later, the complete mirror mounting assembly looks great, and the rubber is nice and supple again. And it's a beautifully clean matte-black finish, too.
At one time, several years ago, the mirror housing was ready for paint, and then Field Day or something came along, and here we are again. I scrub the mirror down with some denatured alcohol, and then a cycle of prime/sand/prime on it until the surface finish is "good enough", and paint it a nice epoxy satin black. I'm no good at painting gloss black surfaces with a spray can, even on something as small as these mirror housings. I've seen other people rattle-can them with amazing results, and I can do it with a spray gun, but me, gloss-black, and spray cans just can't quite get our act together. So satin black it is.
And then I can do it all over again on the driver's side mirror......
Lots and lots and lots of time gets spent just sitting at the bench cleaning and refurbishing small parts and assemblies like these. It's time consuming, sometimes boring work, but it has to be done.
And people wonder why it costs $50k, $75k, or much, much more to properly restore a car.