This is my wiring diagram. And I bought an aftermarket ignition switch. Choke and start work and cranks over but no spark. Next post has picture of switch diagram I bought.
Disconnect the black/yellow from keyswitch at terminal strip (white) and leave it unhooked but insulate it.
The white at terminal strip is minus (points) to coil #1.
I think you grounding out the coils with that one.