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. 330 113945515GBR
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