Wiring questions for coil and alternator harness

Turn the key off.

Test the wire with red tape.

Turn key to run

Test the wire with the red tape

If off, no power and on, power that is coil positive or suitable substitute.

Also check for positive during cranking on the wire with the red tape.

BTW your coil might still need the ballast resister?????

The protronics needs full 12v to function.