I purchased a new wiring harness from Painless Wiring Products for GM 70's cars for the 70 Chevelle SS396 I am working on, and while this is a great product, I don't quite know what to do with the ammeter (as it is not included as part of the replacement harness, a voltmeter is..). I have no problem replacing the ammeter with a voltmeter if I could find one that would look OK. I can't use the ammeter as is as it cannot handle the current (we added a Vintage Air A/C unit) of the new harness. I thought about an electrical "shunt" that would direct only part of the current thru the ammeter. Any other ideas?