Faria Beede Instruments Ammeter Gauge 60-0-60 Amps - Black. A "zero center" ammeter during chargine shows a (+) positive reading indicating the current is flowing to the battery (charge). A (-) negative reading indicates current flowing away from the battery (discharge).Faria Performance Tips:Wiring - Due to the high current loads present in many ammeter applications ammeters must be wired with wire not lighter than 10 AWG approved for Marine use. Specifications for Faria Beede Instruments Ammeter Gauge 60-0-60 Amps: Manufacturer: Faria Beede Instruments Color: Black Features of Faria Beede Instruments Ammeter Gauge 60-0-60 Amps 2" Hole Size Black 60-0-60 Amps Package Contents: Faria Beede Instruments Ammeter Gauge 60-0-60 Amps Faria Beede Instruments 12822: Ammeter Gauge 60-0-60 Amps - Black