2008 jeep wrangler JK-headlamps remain on, wipers working constantly,instrument cluster not working as well as the AC

I had the same problem with my 08 Wrangler, the forums I checked out suggested disconnecting the battery for ten min and then reconnecting. It was also suggested that it may be caused by a moisture problem (damp interior) so I sat a bucket of moisture-sorb on the floor overnight. After reconnecting the battery the problem was gone, try it and see if it works.