The horn is protected by fuse #9 (20 Amp), but my diagrams don't show which fuse
controls the cruise control.
Your Voyager has 2 fuse panels - one under the driver's side instrument panel (just to the right
of the parking brake pedal), and one next to the battery, under a plastic cover..
Fig 1 - driver's side interior fuse panel - note proximity to parking brake pedal - 99 Plymouth Voyager
Fig. 2 - Engine Compartment fuse panel - note proximity to battery - 99 Plymouth Voyager