MSD RPM Activated Switch - Window H753C3952 Protect the lower edge of

Protect the lower edge of your nose in style

1982-1992 GMC C1500

Fullsize Van 1975-86

33" length Black Powdercoat

50 Base Thread

MSD RPM Activated Switch - Window H753C3952 Protect the lower edge ofThese 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