1994 Dodge Ram Van B250 Check Engine light doesn't come on, van won't crank, won't start....nothing when key is turned on It is not battery......buzzer and such does come on when key is turned on

You have a starter/crank fuse. Check this first. But since you have no lights, I would guess it is the ignition switch. The buzzer is a small switch mounted to the ignition lock cylinder. Nothing to do with powering the vehicle.

I know you said it isn't the battery, forgive me, be sure the battery has a full charge and battery connections all good. Use a test lite and follow battery voltage. Battery ground is important also.
The battery voltage may lead to junction block--fusible links--fuse box?
At the fuse-box, pick any component that has a fuse, check fuse circuit for voltage, use a test lite. Some fuses are hot all the time, some go hot with key on, test both ways.
If the starter motor won't crank, check voltage and ground for the starter motor. Usually two voltage circuits at the starter motor, one comes from the battery, hot all the time. The other circuit goes hot with key in the crank position and is probably wired through the clutch or neutral switch then through the starter relay, where applicable, to the starter motor. The starter motor usually grounds through the engine block, so, battery negative connection is important.
Any testing at starter motor, make sure tranny is in park or neutral and functional parking brake is set. Safety is your responsibility. You don't want the vehicle to move during testing.