[Dave at Pelican Parts]

Reddish spark across ~1/8" of gap? Dying coil, most likely. Check the rest of the bits, first, though.

Coil wiring--
Thick-ish black wire (may have a red stripe some years): Coil + terminal. Gets +12V when the key is on. [NOTE: The red stripe can fade!]
Thinner black wire with purple stripe: Coil - terminal. Tach signal wire. [NOTE: The purple stripe can fade and look brown or black!]
Green wire: Coil - terminal. Points wire (by way of the condensor).
Really really thick black wire: Coil center cap. Carries the spark to the distributor.

Green wire with red stripe: To the oil pressure sender just aft of the distributor.

The thick red wire from the alternator that has the ring terminal on the end gets hooked up to the same terminal on the starter that the fat battery cable does.

Since you have some points replacement, you won't have a green points wire. The CDI may change the wiring--probably does. But I'm not sure how.

--DD