Rpm Activated Switch Wiring Diagram. Rpm module to tach terminal white on ignition box black to ground to 12v red yellow for factory ignitions this wire connects to coil negative. Connect post 30 to the solenoid.
The ground will be removed at the off rpm to deactivate the device. In other words the gray wire is grounded before the rpm chip is. These 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 rpmthe rpm activated switch pn 8950 has two activation wires.
Read online or download in pdf without registrationmsd rpm activated switch.
Red black rod to ground. Figure 1 operation of the rpm activated switch. Msds rpm activated switch allows you to control accessories based on engine rpm. Biondo racing ddi 1067 biondo single shift rpm activated switches.