Wife' YJ valve cover casket finally gave up the ghost. So while under the hood I found a plug and wire that was just dangling. I looked all over and don't find where it goes. Here's my attempt at describing where and what:
Big hawkin loom above engine on firewall, passenger side above battery. Tiny loom coming out of it with only red & black wire in it. If left to it's own devices, hangs straight down between the engine and the battery, almost to the frame (this is how I found it.). Has one plastic nipple on it, about halfway, to hold it somewhere to some hole. Goes to a typical black plastic weather proof connector with two little red inserts at the terminal. Has a blue seal around the connector. About 15" long. Could damn near reach anywhere in the engine bay.
OT OMG that new Quiznos sub commercial is a bit freaky.