Swapped to Electronic Dizzy, Ran for a minute, now it won’t start!

OK let's backtrack. Is it bad coil, something in the (old) distributor, or harness/ wiring?

So with the old dist, put a voltmeter on the coil POS and to ground. Turn the key to "run," engine stopped. IF THE meter reads full battery, AKA about 12+, 12.6 the points are OPEN. Bump the engine until they close. Voltage should drop to ?? about 6--10V or so. If way lower, there is something in the wiring, connections, harness, bulkhead connector, key switch or connector

Now start engine. Read coil + Should be 10-12V WHEN the battery is at 14 that is charging on the alternator.

If voltage seems normal..............

Possible problems: You left key on, burned points. Condenser (in dist) might be flakey. You may have a coil going bad.

Alternative:. Get/ build alligator clip jumper wires. You should have some, anyway. Jumper from battery direct to key side of ballast and see if things improve, and then try direct from battery to coil +. Do not run it too long that way, as this bypasses the ballast.

If it does not run better (and be sure of timing) I'd maybe look to a different coil to try.

You can also swap the electronics back in, and "hot wire" it with an alligator clip lead the same way.