To sum it up the radio, dome lights, changer, remote locks are all dead. Everything else works. All went dead at once. Help!

 

We need to know the year.

 

check the battery first for a charge and that the cables are on good and tight...if there is corrosion ...clean it up..

then check fuses...under the hood and in the truck....unplug all accessories like car chargers and ipod chargers.....they might be shorting the system.

 

Its a 2003 SE

 

Check all fuses, including the ones under the hood.
Do your wipers work? How about the rear defroster? Rear wiper? Windshield washers? Cruise? High beams? Turn signals?

 

Do your wipers work? How about the rear defroster? Rear wiper? Windshield washers? Cruise? High beams? Turn signals

They all work

 

This sounds like a fuse problem.
Either the fuse is blown or that part of the fuse block is dead.

 

All the fuses are good

 

Check for power at the fuse.
So remove the fuse and using a voltmeter make sure that the fuse is getting power.

 

Did your CD Changer get wet? If you got wet carpets (leak) you may have a short underneath the carpets.

LR was terrible about running the wire harnesses in some bad areas and there are splices internal to the wire bundle that are not well insulated.

I have removed all the carpets from my 97 Disco I, rewrapped and rerouted wire bundles, removed a dead CD Deck from under the passengers seat and a few other things. Still have some rust and resealing issue to deal with.

There are several areas where water can get in, especially under the carpets.