Before I start pulling up diagrams and tracing wires, thought I'd take the lazy way out and see if anybody here knows what this port is for? New-to-me 1998 TJ with lots of goodies installed (and I keep discovering more). Though it might be immediately obvious once I pulled the dash covers off to install a new flasher relay (which I did today), but still unclear to me at a glance. It splices into several wires behind the dash, with an inline fuse thrown in somewhere along the way. Appears to be aftermarket, but maybe not? Any guesses? Thank you!