I convert voltage regulators to solid-state. A 1931 Pontiac should be no problem. Email me at <wiltonae@adelphia.net> and I will send you some information. Cheers, Bob
I can convert most regulators to solid-state (early Fords are a problem). We not only regulate the voltage, we limit the current to prevent generator burnout. Temperature compensation is included. Positive ground or negative ground, no problem.