I haven't seen one of these locks before, but I wonder if any of these latches may help although if you want to retain the key locking it would need...
The original lucas coils were internally "resisted" and this type is the only correct one. If you buy an aftermarket coil i recommend u ask the store...
So the hot side of the coil comes from the ignition switch (negative earth vehicle) and the ground side goes to the distributor. When the points are...