How do you replace a high mounted brake light?
How do you replace a high mounted brake light?
Pull the lamp housing straight out from the rear of the cab. Twist the bulb socket at the rear of the housing in a counterclockwise direction and pull it straight out of the housing. Pull the bulb from the socket and insert a new bulb. Replace the lamp housing in the reverse order.
What to do if your brake light is out on one side?
These must normally be replaced as an assembly and are not serviceable. A brake light out on one side only is most often a bulb or socket problem. Try the emergency-flashers and if the lamp still does not light, bulbs or sockets are the very likely cause. Inspect the bulb filament and replace any found bad.
What causes brake lights to go out but lower lights work?
If the plunger of the switch does not contact the pedal, check for an adjustment. In rare instances, the brake booster may fail, and the pedal will not rise enough to contact the switch. Pull up on the brake pedal and if the lights go out, switch mis-alignment or pedal position error is the likely cause.
Is the brake light the same as the emergency light?
On vehicles where the flashers are separate from the brake lights, this will not apply. The emergency flashers often use the same wiring, bulbs and sockets as the brakes. If all lights come on, when the emergency flashers are turned on, this shows the bulbs, wires and sockets are good.
How can I tell if my brake light bulbs are good?
Substitute a known good bulb, from the other side, to verify bulbs that cannot be confirmed otherwise. Inspect sockets closely for signs of discoloration, distortion or corrosion on the contacts. With the brakes depressed, lightly touch the terminals with a voltmeter, to check for voltage.
These must normally be replaced as an assembly and are not serviceable. A brake light out on one side only is most often a bulb or socket problem. Try the emergency-flashers and if the lamp still does not light, bulbs or sockets are the very likely cause. Inspect the bulb filament and replace any found bad.
If the plunger of the switch does not contact the pedal, check for an adjustment. In rare instances, the brake booster may fail, and the pedal will not rise enough to contact the switch. Pull up on the brake pedal and if the lights go out, switch mis-alignment or pedal position error is the likely cause.
On vehicles where the flashers are separate from the brake lights, this will not apply. The emergency flashers often use the same wiring, bulbs and sockets as the brakes. If all lights come on, when the emergency flashers are turned on, this shows the bulbs, wires and sockets are good.
Substitute a known good bulb, from the other side, to verify bulbs that cannot be confirmed otherwise. Inspect sockets closely for signs of discoloration, distortion or corrosion on the contacts. With the brakes depressed, lightly touch the terminals with a voltmeter, to check for voltage.
