奔腾B50/B70低配2插刹车灯开关FC01-66490，低配专用。

Designed for 2010-2015 FAW Besturn B50 and 2012-2018 Besturn B70 low-spec models (2.0L) with 2-pin circuit brake light switch. This part detects brake pedal position, triggers brake lights, and sends signal to ECU to control shift logic and cruise control deactivation. OEM number FC01-66490; verify OEM part number for compatibility. Replacement difficulty: low; first disconnect the battery negative, remove the old switch, rotate counterclockwise to install the new piece, avoid damaging clips. This switch is for low-spec models; high-spec models (e.g., with push-button start or auto headlights) require a different model. Consider sampling prior to bulk purchase.