I have the black with yellow wire that powers the ignition coil going through the small terminals on the switch and the large terminals on the switch connected between the negative side of the battery and the chassis ground. On my ITC CRX, normally the only time the switch gets turned off with the engine running is when it is tested in tech. When that happens, I turn on headlights, taillights, brake lights to act as the resistor. I have never had a problem by doing this in the 15 years I have raced this car.