I had brought my jeep in to get the rear main seal replaced its a 4cyl. standard and also the power steering pump replaced. Everything went well the mechanic took it for a test drive and now there is no gauges, radio no interior lights. Checked all fuses and relays checked all grounds. Dont know were to go from here, need help   The jeep only has 55, 00 original miles.  

first off under the hood on the passenger side fire wall make sure there are three connections to the computer. they are big and noticeable. if that doesnt work i am perplexed but will do some reading around on the internet and see if i can help you out. also note in your power distribution block there are relays mini atc fuses and square fuses check all of these to make sure they are good. then there is the fuse box behind the glove box make sure those are good.  

We check the conections you were talking about all are good, I went as far as to replace all fuses and relays under the hood. Plugged in scanner to connection under dash and no power at all to use scanner. The jeep will start up though. This definatly the weirdest problem I have ever had.