Not sure what you're findings are saying beyond which wire is which gauge?

Kinda think the picture of CI-7 is actually CI-30, seat belt buzzer. The repaired splice should be headed toward the headlight switch or ign switch.

Left mid reinforcement should be the green arrow. CI-37, heater blower switch is described as just below left mid. I knida remember a large-ish spade lug going over the steering column stud on at least one of mine. Check for a stray wire in the vicinity, maybe the blue arrow. The red arrow is the rear bracket for the radio which is also it's ground.