need help......the turd wont fire up

Bill the "round thing" is the ignition switch. If you have no power during "crank" to the ignition, check the brown wire (What year are we workin' on??) in the diagram

You should be able to fire it (don't run it for long or leave it hooked up for minutes on end) by running a clip lead from battery (starter relay stud) directly to coil +

When you do that, the coil gets full 12V