Upgrade your Ford Bronco’s electrical system with the Voswitch B400 S — a next-generation grab handle switch panel designed for seamless integration and rugged performance.

This advanced control system replaces outdated relay setups with solid-state MOSFET technology, giving you faster response, cooler operation, and a longer lifespan. With up to 100A of total system power, it’s perfect for powering LED light bars, air compressors, lockers, fans, and other high-draw off-road accessories.

Each circuit supports temporary overloads up to 20% for 30 seconds, ensuring reliable startup of high-inrush devices. Smart self-healing protection eliminates the need for fuse changes—simply power on and go. The plug-and-play design includes everything you need for easy installation, with pre-terminated wiring, an under-hood bracket, and a 100A in-line fuse.

Built to thrive in extreme environments, the IP68 waterproof power module keeps dust and water out, so you can tackle any adventure confidently. With a factory-style fit and finish, the Voswitch B400 S delivers professional-grade power management that looks and performs like OEM—only better.

Key Features

• 【Seamless OEM-Style Fit】Specifically engineered for Ford Bronco 2021-current, the Voswitch B400 S mounts perfectly in the factory grab handle area—delivering a clean, factory look without cutting, drilling, or interior modification.
• 【Powerful 100A Output】Run all your favorite off-road accessories with confidence. The B400 S provides four high-output circuits (20A, 20A, 30A, 40A) for a total of 100A system power, ideal for lights, air compressors, lockers, and fans.
• 【Advanced Solid-State Design】Built with MOSFET technology—no bulky relays, no fragile fuses. The solid-state system runs cooler, lasts longer, and delivers instant, reliable power under all conditions.
• 【Smart Self-Healing Protection】Each circuit includes automatic reset protection that instantly cuts power during a short and restores it once cleared—no downtime, no fuse replacement required.
• 【Built for Off-Road Durability】With IP68 waterproof and dustproof rating, the B400 S is ready for mud, rain, and extreme conditions. Includes under-hood mounting bracket, pre-terminated harness, and 100A fuse for easy plug-and-play installation.

What's Included

• (1) Grab Handle Switch
• (1) Power Module
• (1) Battery Cable Set with 100A In‑Line Fuse
• (1) Under‑Hood Mounting Bracket
• All Required Mounting Hardware, Stickers, and Terminals