MSD RPM Activated Switch - Window 472 Ideal for dedicated nitrous applications

Ideal for dedicated nitrous applications

Mechanical Advance Curve Kit

Silverado 3500 HD 2017-2011

Lateral Accelerometer Gauge

MSD RPM Activated Switch - Window 472 Ideal for dedicated nitrous applicationsThese RPM Activated Switches will perform a variety of different functions from turning on a bulb or solenoid to activating an MSD Timing Control at a desired rpm. The RPM Activated Switch, PN 8950, has two activation wires; one to ground a circuit and the other to open a circuit. Simply plug in an rpm module and wire the Switch to the circuit you want to activate. When the engine rpm reaches that amount, the circuit is activated and will remain on