i just purchased the stock dodge 20 inch wheels and i have the stock 17 inch wheels what do i have to do just hook up the tpms to the new wheels or what?????

 

Just swap them over. You dont even have to buy rebuild kits since they are so new (atleast I didnt have to). The rebuild kits are like $7 each wheel if you need one. The TPMS is attached to the valve stem.
And this is how they look...