Msd 6al Wiring Diagram For Tach. 1 msd 6 series ignition 1 100v1a diode 1 harness pn 8860 4 wire splicers 1 harness pn 8861 2 wire ties 1 18 ground wire 1 faston receptacle 1 white jumper 2 faston straight terminals. I replaced 16a on my 65.
This must be on when cranking and running. March 28 2018 by headcontrolsystem. For the tach use the tach output on the msd module.
The older analog box pn 6420 has a recessed terminal next to the magnetic pick up connector for the tach output.
Run enough wire to reach the msd ignition control box mounted on the firewall in the engine compartment. Msd 6 series installation instructions 6a 6al 6t 6btm 6tn 6aln parts included. Discussion starter 9 jul 27 2016. Wire is positive and the green wire is negative.