What happened to my paint??

[Zig]

Always!

Stock gauges?

6 volt or 12?

Someone else on the forum needs to remind us which side of the gauge attaches to the sending unit wire.

I admire your bravery, Bill!

6 volt GMC gauges with a 12 volt supply.
I got some kind of reducer(?) and put that on the incoming side. (I’ll check to make sure I picked the right side and get back to you.)
Original was positive ground, of course, so there’s that added ? In the mix.
Maybe I need to start a new thread instead of high jacking this one.

 

[Zig]

Before you power the blower motor, go to Amazon or similar and buy a bottle of " ZOOM SPOUT " ~ this is light machine oil in the cleverest precision oiling container I've ever seen .

It's the #1 oil used by those who service / repair electric motors because you can snake the incredibly narrow, 6" long spout in between the squirrel cage wheel or commutator and the body, allowing you to drip in one to three droplets of oil to lubricate the bearing and wet the felt ring at the same time without any mess or overage .

Take your time shopping, I was able to find it for $6 delivered .

Once you have this, you'll wonder how you ever managed before .

Thanks, Nate. I’ll be on the lookout.
It would be great if the original was still willing.
I drive my truck a lot, and once I get the door glass in it, I’ll drive it just as much in the winter, as long as the heater works- especially the defroster.

 

[vwnate1]

Yes, the original motors are pretty stout .

It's a seriously fiddly job to open them up and replace the brushes but IMO well worth the effort .

Grainger sells a nifty 12 drop in replacement fan motor, no I don't remember the P/N although there's an unused one under the piles 'O crap on my dining room table .

My old Mercedes HVAC motors always need brushes, Ma Benx used to get $1,200.00 for them , I bought one aftermarket one and didn't like it, took it back out and gave it to a buddy up near the Canadian Border who lives off the grid, he loves having robust heat in his old 240D again, I taught my self how to take the original BOSCH motors apart, clean out the accumulated dust and crud, replace the soldered in brushes ($10/ pair) , re lube and so on, I have two waiting to be installed right now , always things to do .

FWIW, the electric motors and fuel gauges care not a whit about polarity, just the VOLTAGE ~ DO NOT use one of those ceramic dropping resistors ! .

Go to 5th Avenue Auto Parts and buy the proper one from Randy or cobble one up using Radio Shack voltage regulators .