MSD 8950 RPM Activated Switch

From the ManufacturerCan be programmed to turn on a light, activate a high speed retard or cause an air-shifter to shift by simply plugging in an rpm module. The RPM Switch has two activation wires which, at your pre-selected rpm point, will either ground or open a circuit. No RPM Modules are supplied so they must be ordered separately.SPECIFICATIONS 2 Activation Wires Can Be Used with Stock Inductive Ignitions Or Msd Ignition And Can Handle Up To 1.5 Amps No Rpm Modules SuppliedProduct DescriptionMSD 8950 RPM Activated Switch

Switch Kit, RPM Act 8 Cyl