were is the 94 Dodge 15 passanger van starter relay location

That van does not have a separate relay. It is incorporated into the starter solenoid, which is mounted to the starter motor.

Follow the positive battery cable down under the engine. There will be that big wire and one or two smaller wires. The small wire will be the one from the ignition switch to operate the starter.

You need to make sure 12 volts is getting to the small wire or nothing will work. you can use a test light available almost anywhere. If there is 12 volts at the small wire with the ignition switch in the start position, then, if you are brave, you can short the big battery cable to the bolt under the rubber cover on the solenoid. Caution! the engine will crank and there will be sparks. It's alot of current to crank the engine. Don't let anything touch the chassis or engine block when shorting the big terminals, and only do it for a second or two. It will make some noise when the starter engages so be prepared.

If you have the 12 volts at the small wire, and the engine cranks using the shorting method, the starter solenoid is bad.

You can also just remove the starter (remove the negative and positive battery cables at the battery first) and take the starter to an auto parts store and they will test it for you.