16 pulse/ rev output, Hall-Effect 0.104" driver key Quick disconnect/cable wire harness included For GM/Mopar transmissions type Working voltage: 8-30 VDC/ Temperature range: -40C ~ +80C. * Thread: 7/8-18 in. *Wiring: Red: +12V. Black: Ground. White: signal output Use our sender to convert your mechanical speedometer takeoff (i.e. cable driven) to an electronic pulse output. They are designed for use with custom installations, early model transmission applications, and all Marshall electronic speedometers. We check each hall effect sender for correct operation before shipping.