Found my dads original 1971 duster!

This^^^

You can and you did. The danger in doing this was that the cause of the smoke had not been identified yet. Just testing for resistance or continuity to ground would have let you know if there was a serious short.
So is it safe to assume that the fuseable link is ok since the car got power to run the ignition/starter? I’ll start by checking for power before and after it with a test light