My hatch works. However, when it's pulled down all the way, it clicks. Does anything else on the car use the same relay so I can pull it and test it before I buy a new one?

 

Just to be clear...

You have an electric/ power closing hatch; and as the hatch is being pulled down/ is all the way closed...
You hear the relay activate again?

It is possible that the relay gets too hot (is drawing a little too much amperage) and opening rapidly, then closing again.

Most of the time, this would be an indication of the electric motor struggling (due to being worn, or has an obstruction).
However it is possible that the relay could also be the problem... it would just be less common as in the way you describe the function of the hatch.

 

You are correct.
I do have a complete spare pulldown assembly with a busted up guide from an idiot slamming my hatch shut after I told him not to. The plan is to swap the relays first, test it, and then swap the motors and test it again.

 

I think what you are hearing is the reversing switch. When the motor reaches the bottom of it's travel it flips a switch so the the motor will will be reversed and travel the opposite direction to open the hatch.

 

It was the relay.