Mounted somewhere on the brake pedal lever, or possibly a pressure switch on the master cylinder, depending on the vehicle.
on side of master cylinder.
To replace the pressure switch on a Jacuzzi spa you need to disconnect the wires from the thermostat to the pressure switch. Remove the pressure switch, replace with new one, and reattach the thermostat wires.
This device is the focus of a few different questions - from the symptoms caused by a leaking switch, to the TSB (Technical Service Bulletin) detailing the problem with the leaking switch.See "Related Questions" and "Related Links" below for detailed / photo how-to guides to replace the switch, and a website dedicated to the problems caused by, and how to make repairs.
The brake switch is located on the brake master cylinder!
On a 2008 International truck, the brake pressure switch is typically located on or near the brake master cylinder. It is often mounted directly to the master cylinder or on the brake line leading from it. To access the switch, you may need to remove any covers or components obstructing your view. Always consult the specific service manual for your vehicle model for precise location details.
How I can replace ignition switch cylinder from Isuzu Rodeo?.
It is threaded into the master cylinder. If you can't reach from under, remove the fuel tank to expose the master cylinder and brake light switch.
It will either be a mechanical switch located on the brake pedal lever under the dash, or a pressure switch located on or near the master cylinder.
The switch is located down by the foot petal, near the brake booster shaft that pushes the master cylinder. Its not fixable, if it is inoperable, you replace it.
On the 1972 Buick LeSabre, the brake light switch was located near the pivot point of the brake pedal bracket. Sit in the driver's seat and look down at the area above the brake pedal arm and the firewall. You will see a round or cylindrical-shaped small switch with two wire plugs. When the pedal is released, it is pressed down. When the pedal is depressed, the contacts are released, thus lighting up the brake lights. If the car is equipped with cruise control, there may be a second switch (cruise cancellation switch) installed side by side. Pay attention to the distinction.
if your pressure switch acts up at all, replace it.