DDave,umm Im not tryin to deture You,but someone mentioned to me that runnin a Volt-meter is safer that an Ampmeter,,,I dont know exaclly why ,,but I am cntinplating the same thing on my 68 elk. I have to say I havent hooked up My ampmeter yet ,,,I had a fire in a 55 chevy PU once ..what a drag that was,,and I definately dont want the same thing to happen again!!!!! Sorry I cant be of more help... good luck