So, I recently replaced my water pump, belt, and tensioner. While taking the battery out I discovered the connector in the picture. I don't remember unplugging this, but then again I can't remember what I had for breakfast yesterday. I tried extending it within its range to see if it matched up to anything but I must be blind. Any help would be great. Thanks!

 

It plugs into the back side of the battery box, you can ignore it, it was used for shipping the vehicle