Soooooooo tonight I went out and started up my 00 XJ and turned on all my lights (headlights etc) but only the headlights, running lights (the amber lights), and the right taillight came on. I.e. I couldn't see my gauges and the junk in the center. Turn signals worked all around though. I'm thoroughly baffled and haven't found anything like this yet, but maybe I'm just bad at searching. I've pulled and checked some fuses but maybe I've checked the wrong ones. Thanks for the help in advance.

 

Refresh the ground behind your dash to the firewall. Most likely it's become broken, lost connection, or rusted. Simple check. Check out cruiser54.com for more tips on this type of issue