640127 Automotive RTL Wiring Harness

Features:

• Universal fit for RTL rear light bars
• Designed for extended rear vehicle reach
• Powers running, brake, and reverse lights
• Includes built-in relay for reliable function
• High-quality sheathing for added durability
• Clean, professional-grade wiring solution
• Ideal for trucks, UTVs, and off-road builds
• Not compatible with RTL-S light models

Wiring Made Simple for Rear Lighting Projects

When you're installing an RTL light bar on the back of your truck, UTV, or off-road rig, the last thing you want to deal with is a short, messy, or unreliable wiring setup. The Baja Designs 640127 Automotive RTL Wiring Harness is built specifically for that job, offering enough length to reach cleanly to the rear of your vehicle without needing extensions or splices. It’s the ideal harness for anyone adding an RTL bar and looking to power essential functions like running lights, brake lights, and cargo or reverse lights, all from one clean, easy-to-install system. The built-in relay ensures each function gets steady, reliable power, even under demanding conditions.

Built to Last and Easy to Work With

This harness isn’t just long, it’s well made, too. Baja Designs wrapped it in high-quality sheathing to protect against abrasion, heat, and general wear, making it perfect for harsh environments like trails, worksites, or dusty backroads. It’s designed to integrate smoothly with RTL models, but if you’re running an RTL-S and need turn signal integration, you’ll want to go with harness 64-0130 instead. Installation is straightforward for anyone familiar with basic wiring, and once it’s in, you’ll have peace of mind knowing your light bar is wired safely and securely. For a job done right the first time, this harness checks all the boxes.

Fits: Universal

Notes:

• Universal harness built for Baja Designs RTL light bars
• Powers running, brake, cargo/reverse lights via relay
• High-quality sheathing protects wiring harness
• Long reach to rear of vehicle without extra extension
• No turn signal integration unless using RTL-S harness (64-0130)
• Does not include mounting hardware
• Relay built-in to handle load of multiple light functions
• Price around $85.95 for the universal set
• Buyers must ensure legal use based on local lighting regulations