I purchased a VDO 2" ammeter (30A) and 2" VDO voltmeter from NAPA to install on my 1958 3600, 235 powered NAPCO. The ammeter in the dash gauge assembly works, I wish to have additional gauges. I have searched for details for the best way to install and not found what I think I need. The VDO ammeter does not indicate that it is a gauge that needs a shunt wire. No details about this on the gauge to find out this detail. Does anyone have a simple schematic to install this gauge in a safe and effective manner that will show when the system is charging? I would also greatly value a simple schematic for the voltmeter install. I am also looking for suggestions from the forum for the best tachometer that will connect to the original ignition 235, 6 cylinder.
