Baja Designs S8 Series Backlit Add-On Wiring Harness

Universal Fit | Part Number: 640177

Unlock the full functionality of your light bar with the Baja Designs S8 Series Backlit Add-On Wiring Harness. Designed specifically for S8 light bars with backlit (DRL) capability, this harness allows you to independently power and control the backlight feature.

If your current setup does not include backlight wiring, this harness provides a simple solution to activate the signature backlit glow of your S8 light bar without replacing your main harness. 

With extended wire length and multiple connection options, this harness can be routed to your fuse panel or tied into keyed power for a clean, professional install.

Key Features

• Universal fitment
• Part Number: 640177
• Designed for Baja Designs S8 light bars with backlight feature
• Add-on harness for backlight/DRL function
• Allows independent backlight control
• Plug-and-play style installation
• Extended wire length for flexible routing
• Includes fuse taps and splice connectors
• Clean integration with existing harness setup
• Limited lifetime warranty

⚠️ Fitment Note (IMPORTANT)

❗ This is an add-on harness (NOT a main wiring harness)
❗ Designed for S8 light bars with backlight feature ONLY
❗ Requires an existing main wiring harness for primary light function
❗ Used to power backlight/DRL function only
❗ Verify your light bar has backlight capability before ordering

👉 This is critical — prevents incorrect installs and returns

Add Backlight Functionality

• Activates S8 backlight (DRL) feature
• Enhances vehicle appearance and visibility
• Independent control from main light bar

👉 Unlock the signature Baja Designs look

Flexible Wiring Options

• Route to fuse panel or keyed power source
• Includes multiple fuse taps for easy install
• Optional splice connection included

👉 Works with a variety of vehicle setups

Clean & Simple Installation

• Plug-and-play integration with existing harness
• No need to replace your main wiring system
• Organized and professional wiring solution

👉 Quick upgrade with minimal effort

Built for Off-Road Durability

• High-quality wiring and connectors
• Designed for harsh environments
• Reliable long-term performance

Engineered to perform in extreme off-road conditions.

What’s Included

• Baja Designs backlit add-on wiring harness
• Fuse taps (multiple sizes)
• Splice connector
• Zip ties
• Installation instructions

Specifications

• Compatibility: S8 Series Light Bars (Backlit models)
• Function: Backlight / DRL control
• Harness Type: Add-on harness
• Install Type: Plug-and-play
• Voltage: 12V system

Installation

Connects to existing S8 wiring setup
Routes to fuse panel or keyed power source
Allows independent backlight control
Professional installation recommended
Typical install time: ~15–30 minutes

Why Buy from Iron Ridge Offroad

✔ Fast Shipping
✔ Authorized Baja Designs Dealer
✔ Fast Processing
✔ Off-Road Experts You Can Trust

Complete your lighting setup with the Baja Designs S8 Backlit Add-On Wiring Harness (640177) the easiest way to activate and control your S8 light bar’s backlight feature for a cleaner look and added functionality.