Upfitter Wiring Adapter for OEM Auxiliary Switches – Toyota 4Runner (2025–2026)

The Baja Designs Upfitter Harness is designed specifically for the Toyota 4Runner (2025–2026) and provides an easy way to control auxiliary lighting and other electrical accessories via the vehicle’s factory auxiliary switches.

This Plug & Play wiring adapter connects directly to the factory electrical system, eliminating the need for complex modifications, wire cutting or non-standard connections. The result is a clean, reliable and professional-looking installation.

The wiring adapter is ideal for off-road enthusiasts who want to control their lights and accessories via the vehicle’s original switches. Whether you’re installing reverse lights, A-pillar lights, an LED light bar or other auxiliary equipment, the Upfitter Harness provides easy installation and convenient control.

✅ Key Benefits

• Developed specifically for the Toyota 4Runner (2025–2026)
• Plug & Play installation
• Connects to the original OEM auxiliary switches
• No cutting or rewiring of the factory wiring required
• Clean, professional installation
• Suitable for controlling multiple lighting systems and accessories
• Reliable, organized electrical installation

📦 What’s in the Box

• (2x) Upfitter Harness wiring adapters

⚙️ Features

• Plug & Play system
• Supports up to 4 Baja Designs lighting kits
• Compatible with the original OEM Auxiliary switches
• Quick and easy installation

✔ Compatible Baja Designs Kits

• Squadron 2.0 Sport / Pro Behind-the-Grille Kit
• S8 / S2 Pro Grille Light Replacement Kit
• S2 Reverse Kit (switch version)
• Squadron 2.0 Sport / Pro A-Pillar Kits (all configurations)
• XL Sport / XL Pro / XL80 A-Pillar Kits (all configurations)
• LP4 A-Pillar Kit

🚙 Compatibility

Suitable for:

• Toyota 4Runner (2025–2026)