On the brake pedal.
The horn relay and the cruise control steering wheel switch are powered from the same fuse. Check fuse #44 at the inside fuse panel under the dash.
In order to fix it, you'd have to determine what's wrong with it, whether you have a bad brake switch, a blown fuse, a bad steering wheel switch, a bad servo, or some other problem.
The Chrysler Sebring cruise control switch is located beneath the dashboard, on the drivers side. The cruise control switch should be labeled as such.
The 1995 Mercury Villager turn signal relay switch is located beneath the drivers side dashboard. The turn signal relay switch will be left of the brake pedal.
On most vehicle the brake switch is one way to shut the cruise off.
The switch just pops out of the dashboard.
You could check the switch on the brake pedal, sometimes they need to be adjusted so the cruise will stay on.
It's part of the range switch on the transmission.
If you mean the starter solenoid, it's on the starter.
Usually on the dash to the right of the steering wheel.
On the brake pedal assembly.
Most cars have a switch to disable the cruise control. To permanently disable the cruise, remove the fuse for the circuit.