Welcome to the board!:med:

 

All electronics go through speedo.
I would start there

 

I know it's stupid, but is the light burnt out?

 

Headlight ? No, Speedo backlight... Its not on, not sure if it has one to be honest. Im trying to fix this thing up so I can sell it, bought a Ranger :]

 

I had same issue with a 2001
Speedo started to not work, then AWD light stopped coming on and 4wd didn't engage
Had to replace speedo, try and find a used one, factory is very proud and charges a lot.
Test the speedo

 

How do you test it ??

 

I had neither the time nor the resources to do it myself.
Maybe someone else could help explain, sorry
Ill check my manual though and let you know if I find anything out