Quote Originally Posted by rspears View Post
I'd think you want a Constant Voltage Regulator to give you a constant 6V regardless what your alternator is pushing. One unit can feed multiple gauges, and you can even get a kit to run your heater motor, too. Here's a source - 6 volt to 12 volt conversion parts, Ford flathead, Chevrolet 6 cylinder, Oil Temp Gas gauge reducers, 12 volts to 6 volt reducers, 6 volt alternators, 12 volt alternators, I think the Runtz units are actually voltage regulators, but are for single feed, one per gauge?
You are correct on both parts. Someone gave him the Runtz pieces so it's priced right.

Quote Originally Posted by jerry clayton View Post
aren't those early gauges mechanical???except fot the lighting??-
Quote Originally Posted by HWORRELL View Post
I agree with Jerry. Oil and Temp will be mechanical. Amp gauge doesn't care what the voltage is as its measuring amps. .
Nope, all electric... Already checked... I had to get a replacement for the oil and temp gauges as the originals didn't survive being connected to 12 volts.