Wiring question

[Copestang]

Do anybody know what plug into these wiring  connectors 

Pic 1

Pic 2

Pic 3

Pic 4

 

[midlife]

1. Heater extension wire, non-AC version.

2. seat belt relay system

3. seat back release and door jamb switch connector.

 

[Copestang]

1. Heater extension wire, non-AC version.

2. seat belt relay system

3. seat back release and door jamb switch connector.

I added another pic