Originally Posted by SScott
Thanks everyone! It was the vacuum line that runs up the firewall by the dipstick, I fixed it and the 4 wheel drive works great now! No light but it engages and works fine (I tested it the fun way).
Good job and great of you to reply back so ppl with similar issues can follow.
For the light, you just may have lost or its disconnected, the wire for it. No biggie as it's actually not long enough if you have 3" lift... lol
If you want to find it, then go to the front axle and you'll or find another wire with a harness plug on it that also comes from the CAD. This is where you found the vac lines. This wire gets plugged in at the bottom of radiator, passenger side.