Your starter on 1984 dogde ramcharger only clicks New battery and new starter and new starter relay?

Answer 1

You cleaned the battery cables, especially the chassis and engine ground wire connections?
Cleaned the terminals on the cables?

The click you report means that the solenoid on the top of the starter is engaging, but, either there is not enough current flow in the wires to turn the starter motor (low battery voltage, dirty ground cable connections), or, the starter Bendix is not engaging the flywheel, due to either interference, or the wrong starter is installed.

Also, did you check the replacement starter on the bench, by connection to a battery, or a charger, to ensure it is operational?

Once I went through 5 rebuilt starters, before I got to a good starter, from a major auto store!
Now, they test the starter for me, on their machine in the store, whenever I purchase one.

Bench testing a starter doesn't mean it will always work in the vehicle as a lot more voltage is applied on the bench. Cables will corrode within the casing which may not be evident on its ends. Use a volt meter keep battery end hooked up and check the voltage at the starter end of the cable. Remember, you need more than 12 volts to start an engine. Battery should have at least 12.5 volts or starter will drag or click. Charging system should charge between 13.6 and 14.2 volts.