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Black relay harness kit with fuse box and LED on/off switch for H8 H11 fog lights

SIMPLEX TECHNOLOGY CO., LIMITED

SIMPLEX TECHNOLOGY CO., LIMITED H8 H11 Relay Harness Wire Kit + LED ON/OFF automotive specialty lighting

SKU CH-5B5H-ZEM2S

Universal relay harness kit with LED switch powers H8 or H11 fog, HID and LED lamps up to 130 W on 12 V systems

  • Fit typePerformance/Custom
  • Quality gradePerformance
  • Product typeOther Accessories
  • Main materialPVC
  • Universal 12V relay harness powers HID or LED fog lamps up to 130W
  • Heavy-duty PVC wiring with relay module and safety fuse protects the vehicle circuit
  • LED illuminated on/off switch gives clear visual confirmation of lamp status
  • Works with H8 and H11 sockets for replacement or add-on fog lights
  • Supports 9V–16V systems on off-road 4×4 and driving light kits

Universal H8 H11 Relay Harness

This new wiring kit includes a relay module box, safety fuse box and an LED on/off switch with pre-wired adapters. It is built from PVC and rated for 9 V to 16 V systems with a 130 W maximum load. The harness suits replacement fog lamps, add-on fog lights, HID lamps, LED daytime running lights and off-road work lights.

DIY installers upgrading halogen fogs

The kit fits custom or performance applications where a dedicated relay circuit protects the factory wiring. It is not suited to vehicles that require a CAN-bus decoder or to installations where the combined lamp draw exceeds the rated 130 W limit. Buyers needing a plug-and-play module with integrated load resistors should look elsewhere.

130 W maximum load rating

This single figure determines whether the harness can power the intended lamps without overheating the relay or fuse. Verify the total wattage of all connected lights before purchase. The harness is supplied as one piece and operates on 12 V DC systems.

How it compares

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Price $12.99
Cheaper than about 90% of the 921 comparable items (median $30.99).

Specifications

Product
Product typeOther Accessories
Quality gradePerformance
Size & build
Main materialPVC
Compatibility
Fit typePerformance/Custom

Questions about this item

Will the relay and wiring stay cool during an all-day off-road run?

The kit is rated for systems up to 130 W at 12 V, and the included fuse protects the circuit from overheating during extended use.

Does my vehicle need a specific connector for the H8 H11 plugs to work?

The harness uses standard H8 H11 connectors and includes adapters, so it fits most fog-lamp and work-light housings without extra parts.

Can I keep my factory fog-light switch and just add this harness for HID lamps?

The kit supplies its own LED on/off switch; you can wire it in parallel with the original switch or replace the factory control entirely.

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