Szdystar LED Light Wiring Harness 4-Lead DC12V — 40A Relay, 14AWG Cable, Remote & Dash Switch

Compact remote-control wiring harness that lets you power and switch up to four LED work lights from a single DC12V source with a 30 m remote range. This Szdystar wiring harness kit is built to simplify adding auxiliary lighting to trucks, ATVs, UTVs and off-road rigs by combining heavy-gauge power cabling, a 40A relay and blade fuse with a push-button wired switch plus a wireless remote. The loom includes four output leads to feed up to four individual lights (each recommended under 75W) and a roughly 3.5 m main cable to reach your battery location without splicing existing factory wiring. Materials and connectors are chosen to resist everyday vibration and outdoor conditions, while the plug-and-play approach helps preserve original vehicle harnesses.

How does this kit protect my vehicle’s electrical system?

The harness uses a dedicated 40A blade fuse and relay to isolate the high-current lighting circuit from your vehicle’s factory wiring and switches. That keeps heavy loads off fragile OEM switchgear and prevents overloads from reaching the vehicle electrics. For 24V systems, simply swap in a 24V-rated relay to maintain protection.

• 40A blade fuse included for overload protection
• Relay-driven switching isolates vehicle circuits
• 14AWG power cable reduces voltage drop for up to 300W total

What lights and power limits work with this Szdystar harness?

The kit is designed for DC12V lighting setups like LED driving bars, work lights, fog lights and pods; it supports up to 300W total with each lamp kept under approximately 75W. For installations where a vehicle battery or system is 24V, replace the relay with a 24V-rated version to ensure correct operation and longevity.

• Four independent leads for up to four lights
• Maximum recommended combined wattage: 300W
• Individual lamp recommendation: below 75W per light

How easy is installation and what does remote control offer?

Installation is straightforward for anyone familiar with automotive wiring: the harness plugs to the battery, routes relay and fuse near the source, and mounts the keyboard-style switch inside the cabin. A wireless remote gives on/off control up to roughly 30 meters, while the wired switch provides convenient dash access when you prefer hard-button control.

• About 3.5 m (11.48 ft) main cable for battery reach
• Keyboard-style switch fits into dash panels with adhesive
• Wireless range approx. 30 meters for remote activation

Which materials and durability features are included?

The harness uses 14AWG primary cabling and 16AWG subordinate cores with copper conductors and PVC insulation to balance flexibility and load capacity. Components are rated for typical automotive temperatures and routine off-road vibration; the relay and fuse are serviceable to extend usable life.

• 14AWG power cable (approx. 2 mm²) and 16AWG subordinate cores
• High-quality copper conductors and PVC jacket for durability
• Relay rated 40A (replaceable for 24V use if needed)

Who is this for? This Szdystar 4-lead wiring harness suits mechanics, DIYers and fleet owners installing auxiliary LED lighting who want a safer, centralized power solution with remote convenience. Choose this kit if you need a plug-and-play wiring loom to add multiple work or driving lights while protecting your vehicle’s original wiring and enjoying both dash-mounted and wireless on/off control. Always have installations completed or checked by a qualified technician and verify local regulations before fitting auxiliary lights.

FAQ

Q: Can I use this harness on a 24V vehicle?

A: Yes—swap the included relay for a 24V-rated relay and ensure all lights and wiring are compatible with 24V systems.

Q: What is the maximum wattage supported?

A: The kit supports up to 300W total, with recommended individual lamp wattage below 75W.