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Click on image for the lowdown. 
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| | | Forums66 Topics128,090 Posts1,056,024 Members48,432 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Tim,
I have used a 50 amp 12v 1-wire alternator (that is now 18 years old) that my friend is still using on his 54 truck. It gets "excited" ("turn on point" or "cut in") at around 800 rpm. Once it starts charging, it continues to charge at all RPM until the engine is turned off.
A one-wire alternator has an internal voltage regulator.
To simplify wiring and to fake an original appearance, some people have taken the "guts" out of the voltage regulator and make the one connection inside the empty voltage regulator.
I have a 6v negative ground Powermaster one-wire alternator that I might try on my Suburban. They also make a 6v positive ground 1-wire alternator (perhaps of interest here to GMC owners). | | |
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