Hi,
This might be a touchy subject, but I would advise that you remove your Ampmeter and replace it with a voltmeter at the dash. There are several reasons to do this but the primary one is safety. I do know of an electrical fire caused directly by the ampmeter. If you notice, hardly any of the guage manufacturers offer an ampmeter anymore. Besides... you get more information from the Voltmeter than the ampmeter.
Just trying to help.