These come up on eBay not all that infrequently and someone here is likely parting a Javelin or AMX that has one.

Getting ready to apply some elbow grease to my blower resistor.  Any secrets on what to use, or just elbow grease, scotch brite pad, and all purpose cleaner? Figure I would clear the housing when done.

I have taken them apart and replated the housing or shell and put them back together. 

Be careful cleaning the insulating plate the resistors and terminals are mounted in - you can't really get the original look back easily (at least in my experience)

In the one in the photo, I did replate the terminals themselves and the cover but did a high-sheen job on it for kicks. 

There has to be a better way to do this or something else I could do that I'm not aware of. Any suggestions? As it stands now, I dare not touch that switch in its current state.

Breadboard is actually a pretty good idea. If I go that route then I'll post the parts list and schematic that I make.

I guess all that's left is figuring out what kind of resistance I need for low and medium. I did some Google-fu and wasn't finding what I need. Since the switch is shot, I can't really read the resistance on it.

The e-bay waterproof PWM DC controller looks great, but they are 3.5"x2.5", and 2.5" thick. I suppose you could hide two under the dash though. Screw to dash on passenger side between switch and where the wires exit the body. No one will know but the installer. 10-60V should just be the input range, not the voltage setting range (needs at least 10V to operate). So while it may be a better solution than a resistor, it will take up more room. But it shouldn't get very hot.

The neat thing is you adjust to whatever speed you want low and medium to be. I used a universal blower motor rheostat type controller for low speed when I replaced a two speed (three wire) motor with a universal single speed one. That thing got hot and was mounted under the hood, but I set it at whatever I wanted low to be. Two of those could be used.

Well, the blower fan is definitely being blocked by something, which would explain why it smoked when the previous owner tried to use it.My guess is some sort of nest or dead animal.

Does anyone know the resistor values of the Jav switches? I was hoping to get the new wire harness built before taking the dashboard apart, but it seems like I won't have a choice. It's not a huge deal since I'm pulling the engine and transmission out of it currently and it's not going anywhere for the rest of the winter.

I say this because it does start to turn and something is preventing it from continuing to move. I've been through this before with my Camaro, my old Ford and a friend's Chevelle. When they sit unattended and exposed for as long as my Jav did, especially when leaves and such fall out when I bump the air box, there's a good shot of a nest inside.

Yeah, it was definitely a nest. The motor works just fine now that it isn't blocked up.

So no, that would never be my "first guess". Every single one I've dealt with as a tech over the decades has been related to the physical or electrical aspects of the car's systems, the motor, etc.
And on Chevrolet, ugh, those were the pits.

I have three cars in my shop that have sat outside for years, decades even - each one in different circumstances, but outside.
One was in a grassy lot in Rural CA, another in a sort of remote part of MN, down in a low area near fields and woods, another was "god only knows" but the bottom indicates it sat in dirt for many years (the springs were rusted beyond holding the car up), and there's another outside of my shop which is 50 feet from a rural wooded area to the south, with a creek near, and not far from a river, and on the other side, bean and corn fields, walnut trees and so on.
No "nests" in any of them. 
In two cases the blower motor was stiff from sitting, there was nature's debris in the housing (leaves and stuff that got through the cowl screening and other holes), in another it was actually clean in the housing and the blower motor was stuck - but after five minutes was working fine with a little work and lube. The fourth, sitting outside among the mice, chipmunks and other "rodents" actually spins fine.

Even all of the blower motors on my shelves are situations where the motor itself was the issue, not nests.

That indeed is not common, and not something I'd expect to find, especially to that extent. 
By the way, forget dryer sheets - the Iowa mice, and I am NOT joking, drag them together and use them for NESTING MATERIALS. Yup, I've found nests made of the dryer sheets I've used to keep mice away from things. 

Maybe Iowa rodents are more discriminating!

But you'd think that doing this since the early 1970s I would have found at least one that was as bad as that.

Now if you want to talk COMBINES - fire one of those up in late summer to get it ready and STAND BACK and rats, parts of rats, mice and more come flying out the back as if thrown by a Cardinals pitcher. You DO find nests in those - but then there's FOOD around. Typically rodents build nests where they can cache food easily, it's not far away and there's a bit of shelter or warmth involved.
(it's one reason I try hard to avoid FOOD in the car - no one will be eating their McDonalds in my cars. it attracts things like pictured above!)

Gotta stop for some sleep - have to get up and drive an hour/55 miles in the AM to see an attorney, deal with insurance, wrongful death claims, and more......... there goes another full day!

This week was a total bust - dentist today, saw dentist on Tuesday, said to come back today, power was out over 11 hours Wednesday so no shop work (no lights, NO INTERNET, no tools) and had to get the plating tanks back up to temp. what a wasted week.