Mazda Haval Ford Brake Light Switch BP4K-66-490A 3781100XSZ08A

This replacement uses thickened copper alloy contacts and high-temperature engineering plastic housing, increasing contact wear resistance by about 30% over original; tested to withstand over 100,000 switching cycles. OEM numbers BP4K-66-490A, 3781100XSZ08A; fits Haval H2, Ford 2009–2013 Fiesta, and Mazda models. Functionally, it triggers brake signal via mechanical push rod, controls tail light activation and transmission lock release, with response delay within 0.1 seconds. Installation is moderate; remove the steering-wheel lower cover, unscrew two mounting screws with a 10mm socket to pull out the old part; note connector orientation and avoid prying the housing.