Throwing this up incase someone knows of the top of their head what this might be. Otherwise I will dig out the wiring diagram and figure out the wire color code acronyms and try to search for it there.
Sorry for the crappy picture, I thought it was better. When I was looking for my tail light problem I started at the fuses and noticed this purple/blue spade terminal/wire sticking out from the side into the fuse area. I don’t know if the previous owner did that for some later access or just a screw-up in assembling the lower dash. You can see there was some pinching of the sheathing of the wire near the connector.
I’ve not gone back out to see what voltage is even on the wire or when it might be there. It’s basically one of a handful of open ended wires I’ve run across under the dash on this thing.