Minimal wiring engine start????
Run a wire from BATT+ to coil+. That should feed the ECU thru the ballast. Don't run >1 min that way or the coil may overheat.
To turn the starter, connect a remote starter switch between the little and big terminals on the starter (some people do w/ a screwdriver). I assume you still have the big wire from BATT+ to starter. I also assume you still have the big wire from BATT- to engine block.