---
product_id: 336148062
title: "- Double Color/High Low Beam Wiring Harness Kit DC12V Maximum 300W 40A LED Lights Wiring Harness Switch Relay 14AWG Core Cable Harness for Car Fog Lights Work Driving Lights Bar"
brand: "szdystar"
price: "€ 58.53"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.es/products/336148062-double-color-high-low-beam-wiring-harness-kit-dc12v-maximum
store_origin: ES
region: Spain
---

# 40A high-current relay Supports up to 300W LED lights 14AWG heavy-duty copper wiring - Double Color/High Low Beam Wiring Harness Kit DC12V Maximum 300W 40A LED Lights Wiring Harness Switch Relay 14AWG Core Cable Harness for Car Fog Lights Work Driving Lights Bar

**Brand:** szdystar
**Price:** € 58.53
**Availability:** ✅ In Stock

## Summary

> 🔧 Power your ride with precision and safety—because your lights deserve the best!

## Quick Answers

- **What is this?** - Double Color/High Low Beam Wiring Harness Kit DC12V Maximum 300W 40A LED Lights Wiring Harness Switch Relay 14AWG Core Cable Harness for Car Fog Lights Work Driving Lights Bar by szdystar
- **How much does it cost?** € 58.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/336148062-double-color-high-low-beam-wiring-harness-kit-dc12v-maximum)

## Best For

- szdystar enthusiasts

## Why This Product

- Trusted szdystar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Plug & Play Power:** Direct battery connection protects your car’s original wiring—no compromises, just pure power.
- • **Built for Longevity:** 40A relay with high-current fuse ensures safety and durability under heavy loads.
- • **Rugged & Weatherproof:** Premium copper core with silicon-infused, waterproof PVC insulation built to withstand -40°C to 85°C.
- • **Effortless DIY Upgrade:** Includes on/off switch and relay pre-assembled for quick, hassle-free installation—get your lights shining in no time.
- • **Universal Compatibility:** Perfect for DC12V LED, HID, halogen, fog, and off-road lights up to 300W.

## Overview

This Double Color/High Low Beam Wiring Harness Kit by Szdystar is a professional-grade, 12V wiring solution designed for LED, HID, and halogen lights up to 300W. Featuring a 40A relay, 14AWG copper wiring, and waterproof PVC insulation, it ensures safe, durable, and reliable power delivery directly from the battery without damaging your vehicle’s original wiring. The kit includes a convenient on/off switch, high-current fuse, and is engineered for easy DIY installation, making it ideal for upgrading fog lights, work lights, and off-road light bars.

## Description

Name: Double Color/High Low Beam Wiring Harness KitSwitch Material: Plastic,Keyboard switch (with back glue) can be installed in any part, which is more convenient to operate.Switch Relay: DC 12V Amp : 40A power relay fuse :40A blade fuseNumber of Lights: One LightRecommend Max Wattage: Maximum support for 300W and single lamp working below 300W.Input power:12V (if the battery of your car is 24V, just replace the relay with 24V) default 12VLength: around 11.48ft /3.5MMaterial: high quality PVC, copper and metalHighest Working temperature: -40 ~ 85 degree Celsius Package included:1X Set Relay Wiring Harness With On/Off Switch1X Safety blade fuseNote:1:Manual measuring, please allow 1 ~ 3mm error,thank you.2: Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.

## Features

- double color/high low beam wiring harness kit ,easy to install, easy DIY. the product can be directly connected to the battery to ensure that the power supply line of the original car is not damaged.
- the products are equipped with relays and high current fuses, which are more safe and reliable.. It can be suitable for the light 10W~300W led work light bar.
- Switch, relays and fuse included, The switching relay is rated to 40A, routine use recommend 12A will have a longer lifespan.If you use DC24V power supply, please replace the DC24V relay.
- Professionally assembled wiring loom kit suitable for DC12V HID ,DC12Vhalogen, DC12V LED driving lights,offroad lights bar, offroad spot lights, fog lights, work lights, replacement fog lamps add-on fog lights hid lights etc.
- Durable: made of high quality copper, silicon infused wire, durable and Waterproof.
- Best after-sales service: with absolutely nothing to worry about, if there is any problem with our product, please contact us and leave us a message; we will deal with it within 24 hours.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Szdystar |
| Material | Copper, Plastic, Polyvinyl Chloride (PVC) |
| Item Weight | 0.67 Kilograms |
| Connector Type | Terminal Block, Spade Connector |
| Wire Diameter | 1.63 Millimeters |
| Manufacturer | Szdystar-Maker |
| UPC | 711379631947 |
| Item Weight | 1.48 pounds |
| Package Dimensions | 9.09 x 5.28 x 3.43 inches |
| Item model number | 1Leads |
| Manufacturer Part Number | GM-FS-22 |
| Voltage | 12 Volts |

## Product Details

- **Brand:** Szdystar
- **Material:** Copper, Plastic, Polyvinyl Chloride (PVC)
- **Item Weight:** 0.67 Kilograms
- **Connector Type:** Terminal Block, Spade Connector
- **Wire Diameter:** 1.63 Millimeters

## Images

![- Double Color/High Low Beam Wiring Harness Kit DC12V Maximum 300W 40A LED Lights Wiring Harness Switch Relay 14AWG Core Cable Harness for Car Fog Lights Work Driving Lights Bar - Image 1](https://m.media-amazon.com/images/I/711enl7O-GL.jpg)

## Available Options

This product comes in different **Model** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Product
*by S***I on June 20, 2025*

Worked perfectly for my application.

### ⭐⭐⭐⭐⭐ Totally fixed my issue
*by M***N on October 29, 2024*

Plug and play to bypass factory stupidity in the form of too many relays.Energized by switched lighting circuit, and hooked to power, I now have head and fog lights that work together.Highly recommended!

### ⭐⭐⭐⭐⭐ Waterproof plugs
*by D***Y on March 23, 2025*

Worked great for my truck lighting project!

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-03-14*