Backlighted Amp meter for 12 volt system.High sensitivity and easy operation.Universal fit for 12 Volt car boat truck atvThe light color: WhitePower: 12V DC, Max. 0.3ADiameter: 2 inch / 52mmMeasurement Range: 60-0-60 AMPConnectionsRed wire lead for + volt supply to internal lamp; Black wire to system ground+ Threaded terminal for connecting + volt supply in to metero- Threaded terminal for connecting + volt supply out of metershell color: BlackMaterial:ABS + MetalPackage Contents:1 * AMP GaugeOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.