I think MJ is talking about a temporary jumper, only for troubleshooting.
You just need a reasonably heavy gauge wire from the hot side of the solenoid - I believe the Duraspark can draw about 10 Amps
The other thing you need is a switch on that jumper. It’s the primary power to the ignition.
You can easily burn coils and/or Duraspark modules if you leave the ignition “ON” with the engine not running. Don’t ask me how I know, and why I always carry a spare module and coil.
There may be an easier way to get to it, but I would just inject the power at the main (EDIT: 2 pin) Duraspark connector, and just jumper the other wire straight across from the harness connector to the module connector.
Rocky