Join Date: Mar 2002
Location: Austin, TX, USA
Re: one wire
Beware that the term 3-wire can mean one of several different alternators. The original external regulator setup was a "3-wire" setup. The 10SI and 12SI alternators are also 3-wire. The modern CS alternators are actually 5 wire alternators, but generally, only 3 wires are use. So, you guessed it, those too are referred to as 3-wire alternators.
Now I wish I had a link to a series of imiges someone posted a while back showing what all three looked like. Seems like it was a recent post also.
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI