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Brake light switch compatibility: 2 pin replacement for the brake pedal stop lamp switch, compatible with Mazda 2 and compatible with Mazda 3, restoring consistent brake lamp signals and cruise cancel where equipped. OEM number reference: Matches OE BP4K-66-490A/B for accurate fit and connector geometry, confirm your existing plug and mounting style before purchase to ensure proper engagement in the factory pedal bracket. Core features: 2 pin connector and spring loaded plunger provide precise on off actuation, designed for 12V DC automotive circuits, contact layout helps reduce false signals for steady brake lamp response in traffic. Functional uses: Replaces worn or intermittent stoplight switch to restore brake lights, shift interlock release, and starter interlock functions on vehicles that route these safety signals through the pedal switch. Application scenarios: Suitable for daily commuting cars, school runs, rideshare vehicles, and shop service, ideal when brake lamps stay on, fail to light, or trigger warnings related to the stop lamp circuit.