I need to rewire a 1977 650 yamaha with 2 coils do you have a diagram for this?

I Drove a XS 650 SG From Vegas to Florida Keys Years ago. Nice Bike.:

XS650: 80 XS650G and SG Wiring Diagrams | thexscafe

XS650: 77 XS-D Wiring Diagram | thexscafe

This is for a 1977, but I see it uses 1 coil for both cylinders as well.
Maybe one with points and 2 coils, if so, ignition goes to power the coils, and the ground goes through points and a capacitors.