Transfer case linkage issue

All the electrical seems to work fine. The lockers also work in 4lo. I've got the 4hi locker mod installed but have not activated it.
 
So far, the switch worked ( for about 5mins ) then went out again. I Know it engages in 4WD and 4Lo, but the lockers are not engaging. They engaged for 5 mins, then all the lights went out and I knew something happened that wasn't supposed to.

One more thing to fix will be the dual compressors that engage the lockers. It appears they are not working from the quick check I did by myself. Its just a game of what else will I find once I dive into this project. Its my daughters DD and I have limited time working on it with her busy schedule.

On a positive note, I believe I got rid of the whining noise that I posted on another Thread. I ended up replacing the U joints. Fingers crossed.