Hi,
You don't use the positive coil wire,tape it up so it doesn't short out. The MSD has it's own 2 wires to the coil, don't hook anything else to the coil. Use only an MSD blaster II coil. The MSD has 2 wires for the distributor,use them if your distributor is electronic.
Your tach hooks up to the MSD box.
Good Luck,
Perry.
