Tachometer

An auxiliary output configured as 'Tacho' produces a 0-12V pulse to drive a low-level tachometer. There will be one output pulse for each time a cylinder reaches TDC. Connect an Auxiliary Output directly to a low-level tachometer.

G4X ECUs will NOT drive a high-level tachometer. High-level tachometers must be triggered by a coil’s negative terminal. Using a high-level tachometer on a multi-coil engine presents some problems, as each coil is not firing as often as a distributor engine’s coil would. In this case the preferred solution is to modify the high-level tachometer to accept a low-level signal.