4WD button setup will not change from neutral and the truck will not Move

Alright so swapped transmission, I swapped with an older model transfer case and transmission, it worked fine the stopped. So I took it out and had both my old one and the one other, had both pans off and swapped shift solenoids, neutral safety switch swapped shift linkage holder. Okay, then I put my old back in with these swapped components. I put in fluid, crank it then add until it's at the spot it's supposed to be. Okay, so now I attempt to drive my 4wd button setup won't change from neutral, and the truck won't move, I can hear the clicks when j switch gears but no movement. What do I do?