The starter solenoid, or ignition switch is bad, and either one needs to be replaced.
Replace the starter
you have a magnetic starter on this vehicle, the starter is no good, you might try to hit it with a hammer to get it to start.
most likely it is the starter. try moving the van a little bit or banging on the starter with a hammer ... then try to start it again..... if it starts then it is the starter , if not , it may need to be diagnosed by a repair shop ...
If the headlights will come on bright it's probably the starter. If the lights are dim it may be the battery. If you try jumper cables and it won't start it's probably the starter.
dead battery or a broken wire between the battery and the starter
Starter, replace the contacts and plunger
Could be battery, battery connections, starter, starter connections, neutral safety switch. I would check those in that order.
Yes, the clicking is the starter, but there's probably nothing wrong with it. Your battery doesn't have enough juice to turn the starter motor (draws lots of current), but still has enough to turn on the lights and accessories. Try jump starting it or trickle charge the battery.
most likely tha starter is bad or the power to the starter is bad
There is many different things that can be wrong. If you have lights but the starter won't spin, then you could have a bad break light switch,a bad starter switch, bad starter solenoid, or even a bad starter. If the starter does spin but the motor won't start it could be a bad spark plug, bad coil, fuel blockage, carburetor that needs to be cleaned out, or bad stator.
Your battery is dead and you should probably take it to the repair shop and have them put it in for you. Couldn't it be the starter motor? The lights and radio come on, so there must be some juice and the battery.