Going by this diagram:
MSD Heavy Red wire - Connect to vehicle battery positive terminal
MSD Heavy Black wire - Connect to vehicle battery negative terminal or a good body ground
MSD Red wire - Connect to original ignition coil positive wire
MSD White wire - Connect to original ignition coil negative wire
MSD Black wire - Connect to ignition coil negative terminal
MSD Orange wire - Connect to ignition coil positive terminal
ncie find bt do we need a tach adapter for this?