Alternator failure

How does an alternator wear out? Well, bearings yes but what about the electronics within the alternator…….. what makes that stuff fail is my question.
Fact: water pump seals fail from no use……
I have found a cause and effect having to do with alternators worth noting….. so here it is.
Please give me your comments….

[@comanr]

Hell is that leds :)))

[@andrewb4584]

Jim, as a person who tends to believe GM did it alright, why not just repair the trigger circuit? Is it just to get home? If so, you can simply short trigger to the alternator stud to fake it out for the trip, then repair the circuit when you get home. That's all a one wire regulator does, it's just internal.
The self-exciting one wire circuitry I've had iffy luck with (your mileage may vary), I've swapped 12si cold-pak (the HD alternators, with heavy bearings and massive, finned voltage regulators, from GM) and CS styles into vehicles of all ages, including Generator vintage vehicles, I'm a fan of keeping the "Alt/Gen" light active, which most one wires bypass.
Again, as you say... It's your choice.
Couldn't agree more with the replacement of the water pump and Alternator. Yes, pre-test. Most remans are garbage, and getting worse. Also remove fuses for non essential circuits if you can... Might save a parasitic draw from sidelining you as well.
Always an awesome video, thanks for the info, and thanks for making all of us GMC owners a bit smarter, every day....

[@kelpierl5489]

Thanks for the video. Is there a part # I can give to the auto parts guy? I can't deal with the Year, Make, and Model? question. Is it the kinda thing where our alternator is *the* GM 100 Amp alternator? or are there different form factors that won't work for us?

[@motorhomerehabranch]

A parts store will not have a “1 wire” alternator. Find a local starter/alternator. rebuilder. They can do it

[@chazzbessette3505]

My coach is a recent pull from a long nap since 09 and I'm going to replace a snapped alternator belt soon. I'm thinking I should convert to one wire while I am at it. Do you have documentation on converting to a one wire?

[@motorhomerehabranch]

Did a video on it but find a local starter/alt. rebuilder and I’ll tell you what to tell him, call me