Good news. Find the short and the car will work.
Bad news. Something else will break.
(if I recall, my early model 944 (the one with the square instrument cluster/dash, not the later rounded one) had an intermittent short in the ignition switch. It may have been my 924 (same layout)-I don't remember- but same deal. I have purged this memory from my records...
I've said too much I don't want to encourage this endeavor!
Good luck.