97 Nissan pickup EX - 2.4L - 5 speed - 4x4 - 49,000 miles

I went to put on the AC today and pressed the AC button then turned on
the fan. Nothing happened. The fans worked in all speeds. I noticed that
the blue light on the AC button was not lit up as it usually is when the
AC is turned on. I checked the fuse under the dash. 10 AMP that works
both the AC and radio. The radio was working so that was OK. I pulled it
out anyway and checked it. I also checked the AC relay under the hood. I
switched it with the clutch relay and the AC still did not work. The fan
belt is turning the AC pulley, but the AC clutch is not turning. Unless
there is something else I might have missed, my last hope is the AC
button itself. Any other suggestions?