Need pictures of heater cables hooked up at heater box
The short wire with the ring-terminal gets screwed to the body, IIRC; behind the passenger kick-panel. I sorta remember it being green.
The shortest cable IIRC goes to the mixing door for temp control.
The longest IIRC loops around and comes in from the far right side of the dash, and only fits one way.
That was a memory from 20 years ago, so..............