Ok, I went out this morning and checked through what I have.
My interior wires are good, and I have most (if not all) modules. The only matching number I have to yours is the Glow Plug Relay - we match there. Otherwise, everything else is different.
The number on my harness is also : "82215-90803B" So it looks like the harness is off too.
My main concern is the engine bay area as I am missing the plugs to the Voltage Regulator, the two plus on the EDIC motor, the plug to the alternator, etc...
I am guessing that your wiring harness is off a later 81, as mine is a 11/80 build date. Not sure if this will work or not....hmmm.
I think I may be stuck running/chasing wires with just female push-connectors into the VR/alternator, etc....
Thanks seapotato for helping me with this. Even though we may not have a match here, I appreciate your help.