Random wire unplugged under dash what is it where does it go?

['68OrangeSunshine]

Originally Posted by damnyankee36

That's a mystery! Light green is the color for backup lights along with probably one or two other functions. The backup lights feed wire is combined with the pink wire in an "L"-shaped double connector that connects to the neutral safety switch on top of the column if it is an automatic trans.

Surely, that's not it...

We already found it.
Look at Post 13.
It's the lead for the illuminator bulb on the aftermarket [Counterpart, etc.] Cigar Lighter assembly. A bulb holder clips onto the socket, its ground is the socket, and the Green wire ties into the instrument lights so it dims with the dash.
Since its aftermarket -- maybe a mod from later years -- it won't be on the model year schematic
Mystery over.