Posted by Willy-N [173.245.55.174] on Thursday, December 01, 2016 at 20:53:21 :
In Reply to: alternator is charging 14.5 volts right now posted by Bruce in dank,wet, B.C. [108.162.245.77] on Thursday, December 01, 2016 at 20:35:59 :
Not sure if this may help. I found this on the net;
REMOTE VOLTAGE SENSING, a THREE-WIRE Alternator advantage
The other of the two plug-in wires at the SI series alternator is the “voltage-sensing” terminal for the voltage regulator. Through the sensing-wire, the voltage regulator monitors electrical system voltage and makes adjustments to alternator output. The regulator will adjust alternator output as needed to maintain the place where the sensing-wire is routed (at about 14.2 volts). And the sensing-wire can be routed to a place remote from the alternator (downstream).
This “remote voltage-sensing” feature is often a big advantage when running with a factory type wire harness from the Muscle car period (60’s and early 70’s period cars and trucks). Then the alternator output will be adjusted according to what goes on far downstream from the alternator–at the main power distribution junction, which operates the whole car plus charges the battery!
If your using this set up could you be giving false voltages to the regulator and causing fluctuations in the output? There is a lot of information on a google search you can pick around in for the way you have wired this up.
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