[tmataraza]

Hey guys, me again. I have been dealing with a voltage regulator problem on the 66 catalina. I put in a cheap oil pressure, engine temp, battery voltage gauge pack I was given for christmas because all the car has are the idiot lights. I found out that when driving on the freeway, the battery voltage was hitting 18v if not more (my gauge only goes that high). I replaced the alternator last summer, so I immediately went to Autozone and got a voltage regulator. The first one did nothing. Just 12.4 volts on the battery running at all RPMs. I also had the car not start because of dead battery after a test drive. Ive since been through 3 voltage regulators, two from autozone, one from rock auto. None are putting more than 12.5v on the battery at all RPMs. I took the Alternator to Autozone and they tested it and its good. I believe that to be trustworthy because if I put my old regulator back on, im getting 13v at idle and more than 16v at higher RPM.

Really confused on what the issue is. My old regulator does not have a part number on it to match up to anything. Ideas? Thanks for the help!