went to my goto source for cherokee info:
This is a very common problem, because the placement of the tank and pumps in the fender well subjects them to rust. There's one for front and one for back, and the pumps are identical except for the electrical connector. Pull away the plastic liner on the left front fender*, and you'll find the tank with the pumps pressed in with grommets.
NAPA has the OEM style pumps for 14.99 here, and Parts Master has one for 12.99, which I think fits both front and rear and has a pigtail adapter for the connector.
If either of your washers is currently working, you might want to use up the fluid first because the front pump is at the bottom of the tank, and all the fluid will hit the ground when you pull it.
* edit to add: forward of the wheel \t\t