Szdystar LED Light Bar Wiring Harness Kit 3.5m 14AWG — 40A Relay, Remote & Inline Fuse

Szdystar's LED Lights Bar Remote Control Wiring Harness Kit is a ready-made 3.5m 14AWG wiring loom with a 40A relay, inline blade fuse, on/off switch and wireless remote to power and control a single DC 12V LED driving light up to 300W.

This preassembled wiring harness is designed to simplify adding or upgrading a single LED driving light, spot or fog lamp to vehicles that use a 12V system. The loom uses heavy 14AWG cabling, a 40A blade-style relay and a safety fuse, and includes a compact keyboard-style switch and a handheld remote (approx. 30 m range) for convenient operation. Materials include PVC insulation, copper conductors and metal relay components, and the kit ships with one safety blade fuse and one remote control harness ready for professional or guided DIY installation.

How does this kit safely handle high-current LED driving lights?

The harness routes battery power through a 40A relay and a high-current blade fuse to protect wiring and your vehicle's electrical system. Using a dedicated relay keeps high current away from the dashboard switch, reducing voltage drop and heat on factory wiring.

• 40A blade relay rated for routine DC12V use (swap for 24V if needed)
• Inline blade fuse included for short-circuit protection
• 14AWG copper conductors to support up to 300W single-lamp load
• PVC insulation and sealed connectors for durability

What installation steps and compatibility should I expect?

Installation is straightforward for a technician or experienced DIYer: mount the relay near the battery, connect the positive and negative battery leads, run the load wire to the lamp, and install the switch in the cabin. Confirm your vehicle voltage before fitting — this kit ships set for DC12V; a 24V vehicle requires replacing the relay with a 24V version.

• Length: approx. 3.5 m (11.48 ft) to reach common mounting locations
• Universal plug fits most aftermarket LED driving lights and bars
• Switch: keyboard-style on/off with adhesive pad for interior mounting
• Remote range: up to ~30 meters for wireless operation

What performance and weather resilience can I expect from the harness?

The harness is built for outdoor use with robust copper wiring and PVC jacketing that tolerates routine automotive environments. The switching components and sealed connectors are designed to resist corrosion and heat up to the stated working temperature, making it suitable for off-road and work-light applications.

• Maximum supported single-lamp power: up to 300W at DC12V
• Materials: copper conductors, PVC insulation, metal relay housing
• Highest working temperature rated around 85°C for reliable operation
• Relay and fuse protect against overload and short-circuits

Who is this for? This Szdystar harness suits vehicle owners, mechanics and installers who want a safe, plug-and-play solution for powering a single LED driving light, fog lamp or pod light without modifying factory wiring. It’s a practical choice for off-road enthusiasts, tradespeople installing work lights, and anyone adding an aftermarket single lamp to a 12V vehicle who wants remote operation and protective relay/fuse circuitry. Always have a professional install the kit if you’re unsure, confirm local regulations before adding auxiliary lighting, and swap to a 24V relay if your vehicle uses a 24V electrical system.