Posted by Todd Wilson on Wednesday, October 12, 2005 at 0:59AM :
In Reply to: Tack/dwell meter question posted by Andy (in MI) on Tuesday, October 11, 2005 at 10:01PM :
This is a very interesting question. If I had to take a guess I would say it should not matter.Your meter should work on a 6 volt or a 12 volt system. You might have to hook it up backwards in case the meter would show like -800 rpms due to the postive ground.
Todd