Msd Tach Wiring
The tach output terminal produces a 12 volt square wave signal with a 20 duty cycle.
Msd tach wiring. The msd ignition features a tach output terminal on the side of the unit. If you are using the magnetic pickup input green and violet wires to trigger your msd ignition you will need the pn 8920 tach adapter. If the tach still registers incorrectly install this tach adapter. The tach output wire produces a 12 volt square wave signal with a 20 duty cycle.
Items you will need wire strippers 12 gauge automotive wire male and female connectors volt test light. This terminal provides a trigger signal for tachometers a shift light or other add on rpm activated devices. The tach output terminal produces a 12 volt square wave signal with a 20 duty cycle. The msd ignition features a gray tach output wire that provides a trigger signal for tachometers a shift light or other add on rpm activated devices.
Connect the white wire to this wire using a crimp on wire tap. Https amzn to 2rirmf9 thanks for watching. Squeeze the metal tap on the connector down with a pair of pliers and snap the cover on the connector closed. Run the white wire from the tachometer to the wiring for the instrument lights.
Msd tach adapter pn 8920 if your tachometer doesn t work correctly after installing an msd ignition control always try to connect the tach s trigger wire directly to the tach output of the ignition. Some vehicles with factory tachometers may require a tach adapter to operate with the msd. Some vehicles with factory tachometers may require a tach adapter to operate with the msd. Close the two halves of the connector around the white wire and the instrument light wire.