Truck was running fine up until this morning when I went to start it, now it won't even crank. All gauges work, no CEL, radio works, AirDog and Edge both have power. When I go to start it, I depress the clutch and turn the key, then nothing happens. The starter relay clicks when I turn the key. I have power to the starter. It is acting as though I am not depressing the clutch. 3 months ago I replaced the the hydraulic clutch assembly. What should I be looking for? Starter, alternator and batteries are also new within the last 8 months. Thanks in advance for any insight.

My first thought is starter contacts. You said the starter was new within 8 months.... new, or remanned? If it's remanned, it wouldn't surprise me in the least if the starter contacts are shot.

Whack the starter and see if it cranks, if it does i bet your contacts are fried.

And if it is a starter contact issue... you can fix it yourself for just a few bucks. Larry B. Foster's starter contacts: http://www.fostertruck.com/dodge/

Had the same issue a couple weeks ago. found out I left the headlights on all night DOH!
On another note. Probably starter contacts or cable going to starter came loose, Maybe neutral switch

And if it is a starter contact issue... you can fix it yourself for just a few bucks. Larry B. Foster's starter contacts: http://www.fostertruck.com/dodge/
I had to do this a couple years ago. My starter started to not disengage at times. The upgrade took care of it.

The starter was rebuilt. The leads going to the starter are in good condition and have no corrosion. I will try whacking it with a hammer.

Edit: My starter is not clicking but my starter relay is.

Turned out to be that the starter was bad, as well as the ignition switch. Not sure if this was a joint reaction or simultaneous but thanks to all for the help.