i've got a 68 w/ console ampmeter. would like to keep the faceplace & maybe make some light markings on it for voltage. anyone know how to swap the backend of the meter to measure volts instead of amps. i would guess that someone has done this before.

You might try United speedometer service in Riverside Calif, Richard Workman" usimail@earthlink.net They have done a few conversions for friends of mine!