So some of you more edumacated automobile mechanics will put together my other thread with this one and laugh at me, but that's ok. I am not sure if my circuit warning box had anything to do with it, but maybe someone can surmise further...

My Tuff Stuff 80 Amp Alternator purchased at Summit about a year ago but hardly used is sort of dead. What I get at the main terminal is 50 volts or so. 12.47 at the R terminal, the one that is for the Alt warning light. Terminal 2 is jumpered over to the main terminal for now. Anyone know what I did? But then its not over there...

I have two other Delco 3 wire Alts. I took the one off an old beater and tried it. 100% dead. No voltage on anything. That didnt surprise me, but what DID was when I took the one off my 50 project (3rd alternator) and it was 100% dead too. Three bad Alternators does not make for a good day!

The last two that were 100% dead, I made sure to hook up an incandescent light bulb from the ignition switch to Terminal 1R on the plug, so excitation should not have been the issue.

So, have fun with this one, but please tell me after, is there a more modern, maybe better Alternator to use for these trucks? Has anyone made an Alternator that uses LED's for use with the Alt's internal warning circuit? (seeings how LEDs are being pushed so hard).


Deve

1950 Chevy 3100 Deluxe Cab
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