Regulator and Charging Issues

Posted by cdorsey On 2012/2/21 11:21:00

Hoping someone may be able to provide some incite into this problem. I'm working on a 1940 110 with a charging issue and am completely stumped at this point. This issue has been present since I purchased the car.

The amp meter shows a slight discharge when first started and this progressivley increases as its driven. Headlights and turn signals increase the discharge. Momentarily grounding the Field terminal on the regulator will get it to charge for a short period of time but then it will go back to discharging. It will also show that it's charging by connecting the "BAT" and "Arm terminals.

I have bench tested the Autolite generator and it is good. I am on my third regulator and am considering a 4th. I polorized the system when the 2nd regulator was installed and generator was bench tested. I have also gone through all the terminal ends and grounds to make sure they are good and clean. It has a brand new battery and new 00 cables. The current regulator is a 6V POS/NEG unit from NAPA.

I have traced the three wire hooked to the regulator and it appears that they are all hooked correctly. There is however a loose wire w/ no terminal end that is near the regulator that is hooked to the ignition switch. Is it possible that it should be hooked to one of the regulator terminals?

Does anyone have any thoughts? I appologize for writing a novel but as I said, I'm totaly stumped at this point. Thanks in advance for the help and ideas.