Msd Tach Wiring Diagram

Violet connect to the trigger input wire of the tachometer.

Msd tach wiring diagram. Splice the white wire from the pn 8910 into the msd s white trigger wire. If separate splice in tach wire. Msd www msdperformance com 915 857 5200 fax 915 857 3344. If your gm vehicle has an in line filter it may cause the tach to drop to zero on acceleration.

Splice the red wire from the pn 8910 into the msd s red switched 12 volts wire. Wiring red to a switched 12 volt source. Wiring with a magnetic pickup distributor and a voltage triggered tach. Strip the end of the trigger wire for the tachometer and place a female to female connector to it.

If this occurs bypass the filter. Spark plugs and wires. Some vehicles with factory tachometers may require a tach adapter to operate with the msd. Tach converter wiring diagram 1 mounting it is important to mount the converter away from any direct engine heat sources.

For more information on tachometers and msd tach adapters see the tachometer section on page 6. Pn if your tachometer doesn t work correctly after installing install this tach adapter. The wiring diagrams show both installations green and violet wires to trigger the msd you need the pn adapter. Never connect any wires to the coil terminals when an msd 6 7 8 or 10 series ignition is installed.

Make sure the wires reach the kill switch and a 12 volt source. Fit new wire from the female female connector and run the wire directly from the spool through an open point on the firewall. Black connect to the negative battery terminal. The msd unit and the coil.

Run enough wire to reach the msd ignition control box mounted on the firewall in the engine compartment.