Allrighty... I pulled a bunch of fuses, and tried my best to follow the wiring diagrams from my factory service manual... I'm working with an '00 Cherokee, but I'm pretty sure that the wiring system is the same on 97+...
From what I found out, the 20 amp circuit breaker controls the wipers, and the front wiper pump... Fuse 22 controls the rear wiper, and pump... I say the pump, because it no longer works when you pull that circuit breaker, or fuse...
Looking at the wiring diagrams, assuming that I'm reading them correctly, and it's been a while, I see no other fuse between the wiper fuse, and the pump motor.
It is NOT: Any of the small fuses in the power distribution center under the hood, though if you pull the one in the upper right, looking at it from the front, the engine will shut down. It also is NOT, inside the Jeep, fuses 3,4,5,7,9,10 (throws a check engine light, though), or 18... I pulled those, because it seemed to make the most sense that it might be them...
Hope some of this helps... Is it possible, perhaps, that your wiper tank is frozen up? Does the rear wiper/sprayer work? Do the front wipers work?
