COMPUSHIFT provides an output signal for driving speedometers.  This signal is called reproduced TOSS. This signal replicates the signal coming from the TOSS (Transmission Output Shaft Speed) sensor.

This signal should be used when you have an existing OEM speedometer or engine control computer that uses the TOSS sensor. Reproduced TOSS comes off of the 25-pin connector and comes with enough cable to connect back to an original TOSS plug.

A device called the Cable-X can drive mechanical speedometers if necessary. Built by Abbott Enterprises, the small Cable-X box motor rotates a speedometer cable at a rate proportional to an electronic speed input, and is calibrated to match your speedometer using internal switches. HGM is an authorized Cable-X reseller.