Power Without Compromise.

Introducing the STEDI™ 4x Connector (QUAD) Plug & Play SMART Harness™, purpose-built for high-current, dual-relay applications. Engineered for up to 4 driving lights, this heavy-duty wiring system delivers uncompromising performance, reliability, and simplicity — all in one plug & play solution.

⚡ Dual Relay Power

Featuring 2 × 80A relays and a 75A total harness capacity, the SMART Harness™ is designed to power the most demanding lighting setups. Constructed with 10AWG heavy-duty cable, it ensures minimal voltage drop and maximum output for your auxiliary lights.

🔌 Plug & Play Simplicity

No splicing. No soldering. No guesswork.
The Smart Harness™ automatically detects positive and negative switch polarity, ensuring quick installation across a wide range of vehicles — including Toyota, Ford Ranger, and Mazda BT-50.

Compatible with STEDI™ Quick Connect systems, this harness guarantees an effortless setup for a professional-grade result.

💡 Professional Performance

Equipped with 4 × 2-pin DTP Deutsch connectors and 2.0m of cable from relay to output, this system ensures waterproof reliability and robust power delivery. Dual 45A fuse protection safeguards your equipment under heavy load, giving you total confidence on and off the road.

🔩 Key Features

• Supports up to 4 auxiliary driving lights

• Dual 80A relays for high current capacity

• Automatic polarity detection (positive or negative switch)

• Heavy-duty 10AWG wiring for maximum performance

• Dual 45A fuse protection for safety and reliability

• 2.0m cable length from relay to connectors

• Plug & Play quick connect system

• UV-rated insulation for extreme durability

🛠 Technical Specifications

📦 What’s Included

• 1 × 4 Output DT-P SMART Harness™

• 2 × 80A Relays

• 2 × 45A Fuses

• 1 × 0.78" Dime Switch (red illumination)

• 1 × Cable Tie Set

• 1 × Wiring Diagram