12 Volt conversion gone wrong.
In order to help you must give MORE DETAILED INFORMATION.
Do you have an OHM meter and know how to use it? YES OR NO?
You say the coil and solenoid are OK. How were the checked?
Have you run a jumper from the battery + POSITIVE lead to the + POSITIVE terminal of the COIL? This will bypass the ignition switch, ballast, and the solenoid.
Is there a wire from the _ NEGATIVE pole of the coil to the distributor?
Is the small wire inside the distributor that grounds the point intact?
With the car in NEUTRAL/PARK and power to coil through the jumper wire if you rotate the distributor can you get a spark at 1 ONE the points? and 2 TWO from the lead at the top of the coil to an engine ground? If so,
Have you tried starting fluid?
WAITING FOR YOUR REPLY. Pete