[rpmerf]

Points or HEI:
If you have a square coil in the top of your cap, it is HEI.
If not, pull the cap and see if you have points in the front, or a electric sensor thing in the back. Guess you could look for the 2 wire connector in the back of the distributor also.

For the ignition switch:
Red should be full time power.
Purple should be for the starter.
From looking at the schematic, I think a pink wire will be for the coil / HEI.

I would grab your test light and probe around, see what lights up when. Once you figure that out, you can pull the switch off and test for continuity in different positions. Might be able to pull it apart and clean up contacts or look for anything broken. Also, check for power at the coil when the switch is on and in it's 'running' position.