STEDI Single Connector Plug & Play Smart Harness™ High Beam Driving Light Wiring

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Plug-and-play wiring harness for quick installation of driving lights triggered from high beam, without cutting or soldering. Features H3 (HB3) and H4 adapters that automatically detect positive or negative switching systems.

Works with popular vehicles including Toyotas, Ford Rangers, and Mazda BT50s, with vehicle-specific adapters available separately for models with non-standard connectors.

Key Features

Highlights

• Runs a single light bar or pair of driving lights off one Deutsch DT connector
• H3 (HB3) and H4 adapters auto-detect positive or negative switching
• No cutting or soldering required
• Heat-shrink wrapped 60A relay and 30A fuse for weatherproof reliability
• Compatible with popular platforms like Toyota, Ford Ranger and Mazda BT50

Compatibility

Works with most vehicles using H3 (HB3) or H4 headlight bulbs and a standard high-beam trigger circuit, including popular Toyota, Ford Ranger and Mazda BT50 models. For vehicles with factory LED headlights and non-standard connectors, pair this harness with the matching STEDI vehicle-specific piggyback adapter, sold separately.

How to use

• Mount the waterproof switch and run the relay/fuse assembly in the engine bay
• Connect the H3 (HB3) or H4 adaptor behind your factory headlight bulb (or a STEDI vehicle-specific adapter if fitted)
• Plug your driving light into the Deutsch DT connector
• No cutting or soldering required — the harness auto-detects your vehicle's switching type

What's included

• Quick fit harness with high beam adapter
• ON/OFF switch
• 60A relay (heat-shrink wrapped)
• 30A fuse
• Cable protectors
• 1 DT connector for 1 light bar
• Instruction leaflet