If you have one for 12 volts, try it, you might be surprised to find that it will work just fine on 6 volts, but if your car is positive ground, remember to reverse the clip leads so that the red one is on the positive (ground) side and the black one is on the points, and then be certain not to inadvertently let the any metal on the meter touch the car's body. I have a plastic cased one which works just fine on either voltage. Dick Benjamin ----- Original Message ----- From: <Captden30@xxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Wednesday, December 10, 2003 8:23 PM Subject: IML: tach&dwell meter > does anyone in the club know where i can purchase a tach&dwell meter that > will operate off 6 volt. perhaps someone has one they no longer need and they > would like to sell it? i can be contacted off line at captden30@xxxxxxxx thanks, > dennis 53 imperial. >