Our tach input cable connects a tach signal from your vehicle's ignition system to the digital tach input on the Race-Keeper system. The tach data signal should be a clean square wave, nominally 0-5v.

The Race-Keeper World Challenge tach cable has a Deutsch DT connection (DT06-2S) for connection to tach signal on the vehicle and a locking sensor input connector for connection to the Race-Keeper HE's sensor input.

Race-Keeper Comparo manages calibration of the tach input signal. Once an outing has been recorded with the tach cable connected, the tach data will appear as an available data channel in Race-Keeper Comparo, which you can calibrate by right-clicking on the RPM channel name and selecting the number of pulses per two engine revolutions.