[Goober]

OK Guys. Time to pick some brains. Nothing to do with Cobras, but never the less tech stuff. I buy and sell old tachometers and gauges and want to build a system to duplicate a tach signal that normally the neg side of the ignition coil puts out. What I thinking is get an old distributor (point type), an ignition coil, and a 12 volt source. If I figured a way to wire this stuff up and spin the distributor, would that create a signal to test the tach.
Not sure as how to hook it up, but must be a way. I know the coil wire will have to be attached, but as the rotor spins (without plug wires) will this show anything? Doesn't have to be accurate, just produce a signal
If any bunch of guys can come up with the answer, this group on CC can
Any help appreciated.

Mark