I have a 91 Plymouth Acclaim, and the alternator doesn't charge
the battery. I took the alternator out and had it tested, and
there's nothing wrong with it. I put a new battery in it, but
it still won't charge. I checked the fuseable link from the
alternator to the battery, and there is continuity. Therefore,
it must be the computer.
there are 4 connections on the alternator
L1: direct to battery, positive
L2: direct to battery, negative
c1: small wire, logic, to computer, activates diode
c2: small wire, logic, to computer, also battery ground.
I want to activate the alternator continuously and put on an
external voltage regulator.
What must the voltage (and current), to the logic inputs c1 & c2
be to do so?
I have in mind to run a potentiometer between L1 and c1, and
adjust it until the alternator kicks on.
The schematic shows that c1 goes to the coil of a transformer in
the alternator, which then goes to one of the diodes (an SCR?)