113-945-515GBR VW 3-Prong Brake Light Switch - 1967-1979 Beetle & Bus

3-Prong Hydraulic Brake Light Switch – 113-945-515GBR

The 113-945-515GBR is the standard replacement for most Volkswagens produced between 1967 and 1979. Unlike the earlier 2-prong versions, this 3-prong switch is integral to the safety-monitoring system of the car. When used in pairs on a dual-circuit master cylinder, these switches allow the vehicle to monitor the health of the braking system; if one switch closes before the other due to a leak or air in the line, the "Brake" warning light on your dash will trigger (If still present and wired correctly).

Because these switches live in a high-heat, high-pressure environment, the internal parts can eventually fail. This Brazilian-made unit provides a dependable fix for common issues like "always-on" brake lights or a total failure to illuminate.

Detailed Vehicle Compatibility

VW Beetle (Standard):

• 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977

VW Super Beetle:

• 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979

VW Bus (Type 2 / Transporter):

• 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979

VW Karmann Ghia:

• 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974

VW Thing (Type 181):

• 1973, 1974

VW Type 3:

• 1967, 1968, 1969, 1970, 1971, 1972, 1973

Product Highlights & Features

• Direct Thread-In Fitment: Uses the standard M10 x 1.0 thread pitch, making it compatible with original and aftermarket dual-circuit master cylinders.

• Warning Light Compatible: The third terminal is dedicated to the terminal 81a circuit for the brake failure warning lamp.

• Corrosion Resistant: Features a plated body to protect against road salt and moisture under the vehicle chassis.

Technical Specifications

• Part Number: 113-945-515GBR

• Terminals: 3 (Male Spades)

• Thread Pitch: M10 x 1.0

• Operation: Hydraulic (Normally Open)

Installation & Maintenance Tips

• Quick Swap Method: You can often replace this switch without bleeding the entire brake system. Have the new switch ready, unscrew the old one, and quickly thread the new one in. Only a tiny amount of fluid will escape.

• Clean Terminals: Before plugging in your wiring harness, ensure the female spade connectors are clean. Corroded connectors are the leading cause of "dim" or flickering brake lights.

• Avoid Over-Tightening: The switch uses a tapered thread to seal. Tighten it until it is firm; over-cranking can crack the master cylinder housing or strip the soft threads on the switch.

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113945515GBR