Baja Designs OnX6 / XL Hi-Power Wiring Harness w/ Mode Switch (2-Light Max | 355W)
Universal Fit | Part Number: 640119
Take full control of your off-road lighting with the Baja Designs OnX6 / XL Hi-Power Wiring Harness w/ Mode Switch. Designed for high-output lighting systems, this harness provides a complete, heavy-duty solution for powering and controlling your Baja Designs lights.
This advanced harness includes both an on/off toggle switch and a momentary mode switch, allowing you to easily switch between high and low power modes. It supports up to two lights with a maximum output of 355 watts, making it ideal for high-performance setups.
Built with premium wiring, relay, and fuse protection, this harness ensures reliable performance in the toughest off-road environments.
Key Features
- Universal fitment
- Part Number: 640119
- Designed for OnX6 and XL (Sport & Pro) lights
- High-power capacity (up to 355W)
- Supports up to 2 lights
- Integrated on/off toggle switch
- Integrated momentary mode switch (high/low control)
- Includes relay and inline fuse protection
- Heavy-duty wire gauge for high-output lights
- Plug-and-play installation
- Weather-resistant connectors
- Long lead length for flexible mounting
- Limited lifetime warranty
⚠️ Fitment Note (IMPORTANT)
❗ This is a universal wiring harness
❗ Compatible with Baja Designs OnX6 and XL (Sport & Pro) lights
❗ Designed for high-output light setups
❗ Supports up to 2 lights (355W max total)
❗ Verify light size and power requirements before ordering
👉 This is critical — prevents incorrect installs and returns
High / Low Mode Control
- Momentary switch allows dimming or mode control
- Switch between high and low output modes
- Perfect for street vs off-road lighting use
👉 More control than standard on/off harnesses
High-Power Lighting Capability
- Supports up to 355 watts total output
- Designed for large light bars and powerful setups
- Handles higher draw than basic harnesses
👉 Ideal for serious off-road lighting builds
Dual Light Setup Ready
- Powers up to two lights
- Perfect for dual light bar or pod setups
- Flexible for bumper, roof, or A-pillar installs
👉 Built for scalable lighting systems
Built for Off-Road Durability
- Heavy-duty wiring and sheathing
- Weather-resistant connectors
- Designed for vibration and harsh environments
Engineered for reliability in extreme conditions.
What’s Included
- Baja Designs Hi-Power wiring harness
- On/Off toggle switch
- Momentary mode switch
- Relay and inline fuse
- Battery terminals and connectors
- Installation-ready wiring leads
Specifications
- Compatibility: OnX6 / XL Sport / XL Pro
- Max Lights: 2 lights
- Max Output: 355W
- Switch Type: On/Off + Momentary Mode
- Voltage: 12V system
- Connector Type: Weather-resistant connectors
- Harness Type: High-power universal harness
Installation
Universal wiring application
Connects directly to battery
Includes relay and fuse protection
Switches mount inside vehicle cabin
Professional installation recommended
Typical install time: ~30–60 minutes
Why Buy from Iron Ridge Offroad
✔ Fast Shipping
✔ Authorized Premium Brands
✔ Fast Processing
✔ Off-Road Experts You Can Trust
Power your lighting the right way with the Baja Designs Hi-Power Wiring Harness w/ Mode Switch (640119) built for high-output systems, advanced control, and reliable performance in any off-road environment.
