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Can be used with VR
HT-186500 - Main Harness
MS2 Extra MegaSquirt 2 processor-specific features:
4 x synchronised pulsed inputs
AXM-100 High Voltage Tach Adapter gps Can be used with VRMany older tachometers trigger off the negative terminal of the ignition coil. Often, these use a filtering circuit which will not trigger when given a 0 to 12 volt square wave signal, such as the tach output signal from an ECU or ignition box. If you have a tachometer that originally received a signal from the negative terminal of your coil, and it wont move if you wire it to the ECU tach output, use our AXM 100 high voltage tach adapter to step up