I have had really good luck running the all electronic Regitar C524 voltage regulator, which Fury GT referenced above.

Alt needle is rock solid. I have had no problem running them with the new Powermaster 90 amp alternators (though I should note that I have new harnesses throughout). At idle the charging system is giving me a steady 14.6V

fury GT sells them on e-bay, a couple of electronic parts suppliers sell them as well. One other note, I am really careful to make sure the VR is grounded well on the firewall.

Last edited by Kowal; 07/06/20 11:53 AM.
'69 Hemi Charger 500, ‘70 U code Challenger R/T
(These and a bunch others at www.dkowal426.com)

P.J. O'Rouke: "The old car ran perfectly, right up until it didn't."