Re: One-Wire Alternator to 3-Wire

Posted by cj3b_jeep on April 20, 2007 at 04:57:53 from (131.123.222.106):

In Reply to: One-Wire Alternator to 3-Wire posted by Gene-AL on April 19, 2007 at 19:57:27:

A one-wire alternator canot be used with an idiot light, only an
ammeter or volt meter, my old Jeep is set up with a one-wire,
which has to self excite just above idle, right around 700 rpms. It
used to kick in at about 1,000 rpms, but I took it to a generator
shop and they did something to it to make it kick in lower. The
three wire version excites via the battery. Idiot lights are a strange
thing, having power coming in one side from the battery via the key
switch, and ground coming from the alternator, once the alternator
is charging, it sends a second positive to the light, turning it off.
All-in All, I think the three wire is a better setup, and also, if you
have to replace one, it's much easier to find the three wire.

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