A) Version with contact breaker points
Disconnect wires.
Remove resistor.
Note when fitting: black/red wire to terminal 15 of ignition coil
green wire to terminal 15 of ignition lock

B) Version without contact breaker points
Disconnect wires.
Take resistor off of holder.
Note when fitting: black/red wire to 0.6 ohm resistor
green/white wire to 0.4 ohm resistor
black/red wire to 0.4 ohm resistor.