MSD Digital RPM Activated Switch - Window Switch w/ Tach 200400104 check dimensions carefully before ordering

check dimensions carefully before ordering

With full travel Hydraulic lifters in performance engines

Improved Appearance When Used w/ Earl's Black Oil Coolers

1963-1963 Plymouth Fleet Special

655 in Head

MSD Digital RPM Activated Switch - Window Switch w/ Tach 200400104 check dimensions carefully before orderingThis Switch will accept an input rpm signal from a coil negative terminal (for stock ignitions), a tach output from an ignition control, an ECU tach output or even a 5 volt tach signal. Another great feature is that no rpm modules are needed! The rpm activation points are programmed by simply scrolling through the LED display to your desired rpm amounts. The switch has two outputs; one Normally Open, the other is Normally Closed. It can be programmed