Auto gage(R) puts the power of performance in your dash with these bold 270deg in.full sweepin. instruments, giving you maximum visibility under the most demanding conditions. All of the individual gauges include an optional chrome plated bezel that snaps on to add sparkle if desired. The Ammeter 60-0-60 amps (Electric) gage requires 10 Gauge wire. Use ammeter only on an alternator with a maximum output of 60 amps or less. Higher output alternators must use a voltmeter. Ammeter must be installed by an experienced mechanic.