STEDI SMART Harness™ | Dual Output High Beam Wiring Harness

STEDI SMART Harness™ | Dual Output High Beam Wiring Harness

Plug-and-play high beam integration for modern LED driving lights and light bars.

The STEDI SMART Harness™ is designed to simplify the installation of aftermarket driving lights by providing a true plug-and-play high beam trigger solution for modern vehicles.

Built with dual relay protection, dual DT-P outputs, heavy-duty 10AWG wiring, and automatic positive/negative switching detection, the SMART Harness removes the guesswork from wiring high-performance driving lights.

Whether you're installing a pair of STEDI Type-X driving lights or a slim LED light bar, this harness delivers clean installation, reliable switching, and proper high beam integration without cutting factory wiring.

Why Choose the STEDI SMART Harness™?

• True Plug-and-Play Installation, no cutting, soldering, or splicing required on most vehicles
• Automatic Positive & Negative Switching Detection, built-in microprocessor automatically detects your vehicle’s switching system
• Dual DT-P Outputs, designed for dual driving lights or compatible LED light bars
• Heavy-Duty 10AWG Wiring, supports high-current lighting setups with reduced voltage drop
• ADR-Compliant High Beam Triggering, driving lights activate only with high beams
• Waterproof Switch Included, suitable for interior or exposed mounting applications

Designed to Simplify Modern Vehicle Wiring

Modern vehicles can be notoriously difficult to wire driving lights into correctly, especially platforms using negative switching systems.

The STEDI SMART Harness™ eliminates the complexity by automatically detecting your vehicle’s switching type and configuring itself accordingly.

This makes it especially valuable for vehicles like:

• Toyota trucks and SUVs
• Ford Ranger & Raptor
• Mazda BT-50
• Many modern CANBUS-equipped vehicles

The result is faster installation, fewer compatibility headaches, and a cleaner finished setup.

Plug-and-Play High Beam Integration

The included HB3 and H4 piggyback adapters allow your driving lights to trigger directly from your factory high beam circuit.

Simply unplug your factory headlight connector, insert the supplied adapter, and connect the harness.

No cutting factory wiring. No complicated relay diagrams. No unnecessary guesswork.

The included switch functions as an isolator, allowing you to disable the auxiliary lights while maintaining proper high beam operation.

Compatible with Additional Adapters

HB3 and H4 are the most common headlight connectors, but additional adapters are available separately for:

• H1
• H7
• H9
• Ford Ranger / Raptor PX2 & PX3
• Toyota LandCruiser 200 Series
• Mitsubishi Triton MQ & MR
• Isuzu D-Max & MU-X
• Holden Colorado
• Volkswagen Amarok

Built for Real-World Use

The SMART Harness™ is designed for demanding touring, overland, and off-road environments.

• UV-resistant insulation
• Heat-shrink sealed relay protection
• Ribbed cable protection loom
• Water-resistant switch design
• Heavy-duty relays and fuse protection

This is not a generic wiring kit. It’s purpose-built for serious auxiliary lighting setups.

Technical Specifications

• Output Type: Dual DT-P connectors
• Relay Configuration: Dual 60A relays
• Fuse Protection: Dual 35A fuse kits
• Wiring Gauge: 10AWG high-current cable
• Total Wiring Length: 6.4m
• Relay to Switch Length: 2.4m
• Light Connector to Relay Length: 2.0m
• HB3/H4 Adapter to Relay Length: 2.0m
• Switch Type: Waterproof ON/OFF switch
• Compatibility: Positive and negative switched vehicles

What’s Included

• 1 x STEDI SMART Harness™
• Dual DT-P output connectors
• HB3 piggyback adapter
• H4 piggyback adapter
• Waterproof ON/OFF switch
• Dual relays and fuse protection
• Instruction manual

Cap-it Expert Take

Wiring modern driving lights into modern vehicles has become far more complicated than it used to be.

The STEDI SMART Harness™ solves that problem properly.

Instead of chasing wiring diagrams or trying to figure out positive versus negative switching, this harness handles the difficult part automatically while delivering a clean, professional installation.

Less frustration. Better reliability. Faster install.