Szdystar LED Driving Light Bar Wiring Harness Kit 400W 12AWG with Remote Switch, 11.5ft Heavy-Duty

This pre-assembled wiring harness delivers reliable DC12V power to most off-road and auxiliary LED light bars while keeping installation straightforward. It combines thick copper conductors, durable PVC insulation, and a waterproof plug so you can route power from the battery to your lights with minimal voltage drop. The kit includes a long harness (approx. 11.5 ft / 3.5 m), circuit protection, and a compact adhesive remote switch rated for up to 100 feet (30 meters) of wireless control.

How does this kit simplify installing an LED driving light bar?

The harness comes fully assembled to reduce wiring mistakes and shorten installation time. You connect the harness directly to the battery, attach the universal plug to the light bar, and secure the mountable remote switch inside the cabin. Everything needed for a basic install is included, along with clear instructions.

• Pre-wired heavy 12AWG copper cable for minimal voltage drop
• 11.5 ft (3.5 m) length gives flexible routing through engine bays
• Mountable adhesive remote switch for convenient in-cab placement
• Simple battery, relay, and fuse connections with an easy-to-follow manual

What electrical protection and capacity does the harness provide?

Protection is built in with a 40A automotive relay and a blade fuse to guard against overloads and short circuits. The wiring supports up to 400W on a DC12V system, which suits most single-row and many dual-row LED driving light bars when properly wired. For DC24V systems, swapping the relay to a DC24V-rated unit is required.

• 40A relay and blade fuse for circuit safety
• Rated up to 400W on DC12V vehicles
• For DC24V vehicles, replace relay with DC24V model (not included)
• Temperature tolerance up to approx. 185°F (85°C)

How does the remote and connector design improve daily use?

The wireless remote offers extended control range so you can toggle lights from outside the vehicle or from a distance. The remote’s adhesive backing and compact housing let you mount it on any flat surface for quick access. The harness uses a universal waterproof plug that fits most standard LED light bar inputs for a secure connection in wet conditions.

• Extended remote range: up to 100 ft (30 m)
• Strong adhesive-mounted switch for easy placement inside the cab
• Universal waterproof plug for reliable outdoor connections
• Durable terminals resist corrosion for longer service life

Who is this kit made for? Szdystar’s wiring harness suits DIYers and professional installers fitting auxiliary lighting on trucks, SUVs, ATVs, work vehicles, and recreational rigs who need a durable, easy-to-install power solution. It’s aimed at users who want robust 12AWG wiring, in-line protection, and a convenient remote switch without rewiring factory systems. If your setup is DC12V and the total light wattage stays at or below 400W, this harness offers a dependable, weather-resistant way to power and control your LED driving lights.