[CaptainGizmo]

Does anyone have any idea what this plug could go to?  I discovered it resting on the driver's window track, hence the scuff marks.  This picture was taken underneath the driver's control panel, near the DataPort plug.

Nothing is malfunctioning that I can tell.  I realize it may be an extra, but I'd like to be sure if possible.

I'll send an email to Newell on Monday, but the community may be able to help in the meantime.

[MrE]

That looks very similar to some of the interior lights in my Range Rover.

[CaptainGizmo]

The answer is:

It’s a splitter connection for the 1939. The “end” is actually not an end, but a termination with a Resistor!

Mystery solved and it’s stuffed back down into the abyss.