4 Wheel Drive/SUVs: 98 ford 150 4x4, fuse panels, switch harness

Question
the switch for the 4wd will not engauge trans fer case there is no power to the switch  all fuses are good where is the relay or does it work off the ecm

Answer
First off there are two fuse panels, one under the hood and one under the dash. I would start there again to see if there isn't really a fuse blown. The 4x4 works on and independant computer for actuation so it is a self contained system. Also check for ground at the switch harness. something is not letting power in and you have to find that first to fix it