Outside temperature display don't work

The Ambient Air Temperature Sensor is what you want , an it is located in front of the a/c condenser . remove

1. the pin-type retainers and remove the radiator sight shield

1. Disconnect the connector.

I would suspect the outise air temp sensor is defective, replace it. It is located in front of the AC condensor core.

Not a solution, but mine doesn't work either.

If the lights in the overhead console work then it is not a fuse, it is a bad console. These units are poorly designed and fail frequently. We offer a repair service with a lifetime guarantee. Check out www.autoclockrepair.com. Drop us a note if you have any questions, thanks!

The overhead display is powered by the same circuit for the overhead console, so if the vanity mirrors still work, chances are the fuse is fine.

Just in case, push the button a few times, to make sure the display is not turned off.
The overhead displays have a chance of the surface mounted resistors becoming unsoldered over time.
You can get one at a junk yard, or if you are good with a soldering iron, you can reattach the surface mounted resistors. Pull the overhead console down, and remove the display ( T10 screws holding the display to the console ). There are 2 plastic tabs holding the display together, release these.
On the back of the circuit board, you are looking for a resistor that looks like this :

The overhead console is quite prone to internal failure. Dim, intermittent, or dead displays are a common symptom of an internal failure. We offer a reasonable repair service with a lifetime guarantee. Check it out: www.autoclockrepair.com

Check the wiring plug that goes into the back of the mirror. They come unplugged sometimes.

check on http://expeditionforum.com/index.php

I rem someone fixing it seems like it was nothing more than fixing a cold solder joint.

The overhead console is quite prone to internal failure. Dim, intermittent, or dead displays are a common symptom of an internal failure. We offer a reasonable repair service with a lifetime guarantee. Check it out: www.autoclockrepair.com

overhead module with the temmp and compass typically just quit after a few years
pull it down and check voltage to the module