These are the symptoms. I will start with the front actuator. Thank you!If you have verified the front axle is not locking in. Then the problem may be in the front actuator. 94s have the old thermal type. Which are known to fail. If it is bad, the 4x4 wont work, and the light for the front axle will not come on. They are easy to replace.
You can upgrade to the newer motorized type. It works a lot better than the older thermal type..