Truck-Lite 50899 – Heavy-Duty Steel Air Brake Stoplight Switch, 2-Bolt Terminal

Ensure instantaneous and accurate brake light activation with the Truck-Lite 50899 Heavy-Duty Steel Switch. Engineered specifically for commercial vehicle air brake systems and anti-lock braking (ABS) applications, this rugged 12V switch utilizes a highly sensitive internal "snap-action" spring to ensure precise opening and closing at both high and low pneumatic pressures. Featuring a premium steel housing and a secure 2-bolt terminal design, it delivers dependable fleet-grade circuit management under extreme road vibration.

When managing heavy-duty commercial truck and trailer fleets, split-second signal illumination is critical to highway safety and regulatory compliance. The Truck-Lite 50899 Air Brake Stoplight Switch provides a highly sensitive, durable interface built to accurately close and open electrical circuits the moment air line pressures shift.

The heart of the 50899 is its engineered internal "snap-action" spring combined with high-grade silver cadmium contacts. This premium configuration guarantees a crisp, arc-free electrical connection that resists pitting and handles high current loads (up to 24A at 12V). This switch is highly sensitive, operating reliably under low-pressure changes, which makes it an exceptional choice for modern anti-lock braking system (ABS) diagnostics and auxiliary safety routing.

Unlike standard plastic switches that easily crack under chassis fatigue, the Truck-Lite 50899 features a fully enclosed steel housing. The exterior is finished with a robust 2-bolt terminal configuration that allows for a tight, mechanical wire connection that won't wiggle loose or strip out over long hauls.