One example is to connect the GMR, which stands for Giant Magneto Resistive, to a diesel injector current wire. This will produce a signal that can be used to trigger a tachometer or shift light! Another example is on late-model engine equipped with a coil-on-plug ignition system. One of the coil's primary current wires is simply routed into the pickup clip and GMR converts this pulsing into a 12 volt signal for a shift light!

Features

Clip to a coil pack primary lead to produce a stable 12-volt square wave for a tach, shift light or RPM-activated accessory

Connect to a diesel injector wire to provide an easy tach installation

Operates with 5-24 volt input for universal applications