Brake light switch. Porsche 911 / 914  ❭  91161341101

Brake Light Switch.
Restore reliable brake light operation with this OE Match Brake Light Switch. Designed for compatible Porsche applications, the brake light switch is an important electrical component that activates the rear brake lights when the braking system is operated.

Fits:
Porsche 911 01/1963 - 07/1989
Porsche 914 01/1969 - 02/1976

Diagram Ref No 76

Brake lights provide an essential warning to following road users that the vehicle is slowing down or stopping. The switch detects brake operation and completes the electrical circuit required to illuminate the brake lamps. A correctly functioning switch ensures that the lights respond consistently whenever the brakes are applied.  

What This Product Does:

• Activates the rear brake lights when the braking system is operated.
• Provides an electrical signal for brake lamp operation.
• Alerts following drivers that the vehicle is slowing or stopping.
• Helps ensure consistent brake light response.
• Switches the brake lamp circuit on and off as required.
• Supports safe communication with other road users.
• Replaces a worn, sticking, damaged or failed brake light switch.
• Helps restore correct operation when brake lights are intermittent.
• Provides an OE-style replacement for compatible Porsche applications.

Symptoms Of Wear Or Failure:

• Brake lights do not illuminate when braking.
• Brake lights operate only intermittently.
• Brake lights illuminate later than expected.
• Excessive brake operation is required before the lights come on.
• Brake lights remain illuminated after the brakes are released.
• Brake lamps flicker or operate inconsistently.
• The switch works when cold but becomes unreliable as the vehicle warms up.
• A known-good bulb does not illuminate despite the rest of the circuit being functional.
• Visible corrosion or damage around the switch or electrical terminals.
• Electrical testing indicates inconsistent or no continuity through the switch.

Why Replacement Matters:

• Brake lights are a critical vehicle safety feature. They provide following drivers with immediate visual warning that the vehicle is braking, giving them additional time to react and reduce speed.
• A failed switch may leave the brake lights completely inoperative, increasing the risk of a following vehicle being unable to recognise that you are slowing down. An intermittent or delayed switch can be similarly problematic because brake light activation may not accurately correspond with braking.
• A switch that remains permanently closed creates a different problem. Continuously illuminated brake lights can prevent following drivers from recognising when the brakes are actually being applied and may also discharge the battery when the vehicle is stationary, depending on the electrical system design.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91161341101

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