1990 BroncoII 4wd problems

[Br0nc0two]

I just bought a 1990 B2 got a sweet deal motor runs perfect. The 4wd lights stay on like its engaged but there is no 4wd it is manual hubs and push button 4wd it says its in low range but its not and when i press the button it goes off for a second and come back on any thoughts?

 

[RangerSVT]

4wd module is possibly bad...
SVT

 

[Br0nc0two]

Also the light doesn't come on for about 10 mins after it is running. If i can get some general ideas of what to look for i can trouble shoot it. temp gauge doesnt work either. If worst comes to worst and it becomes a money pit i can scrap it and make some money on it.

 

[RangerSVT]

Could possibly be a ground problem, or bad connection. Check the plugs at the tcase...
SVT