---
product_id: 47024300
title: "Automotive Relay Harness Set"
brand: "nilight"
price: "KD 8.67"
currency: KWD
in_stock: null
reviews_count: 8
url: https://www.desertcart.com.kw/products/47024300-automotive-relay-harness-set
store_origin: KW
region: Kuwait
---

# 40A switching 5-pin design Durable materials Automotive Relay Harness Set

**Brand:** nilight
**Price:** KD 8.67
**Availability:** ❌ Out of Stock

## Summary

> 🔧 Elevate Your Wiring Game with Nilight!

## Quick Answers

- **What is this?** Automotive Relay Harness Set by nilight
- **How much does it cost?** KD 8.67 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/47024300-automotive-relay-harness-set)

## Best For

- nilight enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from premium materials for superior quality and longevity.
- • **Power Up Your Projects:** Experience high switching capability with 40A/14V DC and 30A/14V DC options.
- • **Color-Coded Convenience:** Simplified wiring with color-coded relay sockets for quick setup.
- • **Effortless Installation:** Unique male-female slot design ensures a clean and easy connection.
- • **Universal Compatibility:** Designed to fit a wide range of applications effortlessly.

## Overview

The Nilight 50003R Automotive Set includes 5 high-quality 5-pin relays and sockets, designed for easy installation and superior performance. With a high switching capability of 40A/14V DC and 30A/14V DC, this set is perfect for various automotive applications. The durable materials ensure a long lifespan, while the color-coded wiring simplifies the installation process. Backed by a 2-year warranty, this universal fit set is a must-have for any DIY enthusiast or professional.

## Description

Nilight 50003R Automotive Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Wiring Harness-5 Pack, 2 Years Warranty

## Features

- High switching capability: Normally open 40A/14V DC and normally close 30A/14V DC. Suitable for Nilight LED light bar wiring harness kit
- Premium quality: Durable relay and harness socket with 5 wires; Made by high-grade materials to ensure superior quality and long lifespan
- Male-female slot design: Unique male-female slot design, easy to connect the relay with harness socket, clean and neat after installation
- Easy wiring: The relay sockets come with different colors for loads/accessories, simple and convenient wiring
- Package include: 5 x relay and 5 x relay socket with wires.Fit type: Universal fit

## Product Details

- **Connector Type:** Plug-In
- **Contact Material:** Silver Copper
- **Contact Type:** Spdt
- **Current Rating:** 40 Amps
- **Mounting Type:** Surface Mount

## Images

![Automotive Relay Harness Set - Image 1](https://m.media-amazon.com/images/I/61QfU5CpR+L.jpg)

## Available Options

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

## Questions & Answers

**Q: How long will this last with constant on and off pulses**
A: Mechanical (at 7,200 ops./h): 10,000,000
Electrical (at 600 ops./h): 100,000

**Q: Is it possible to remove the metal mounting bracket so it can be used in a relay box?**
A: The mounting tab can easily be removed however I don’t know if they would fit in a relay box

**Q: I am looking for turn signal relay to correct hyper-flash with led bulbs on 2012 Honda Fit, with out having to put resistor at each location ???**
A: Go to a truck stop and get an electronic flasher,it doesn't care how many lights you have in the system or how few.

**Q: I want to use this to power my cooling fan when the ignition key is turned. If I wire off the battery will it work?**
A: As long as
1. You wire the common (terminal 30) to your fan+, and
2. You wire NO (terminal 87) to VBat (through a fuse),

You should be fine.  That is pretty much how my car has these relays wired from the factory for the radiator fans.  I assume you will connect terminal 85 to VBat through a fuse, and your ignition-control wire is a ground-interrupt connected to terminal 86 (otherwise, if your ignition-on wire is +12V/hot, you will want to connect it through a fuse to terminal 85, and simply ground terminal 86).  I seem to recall these solenoid coils pull about 130mA at 12V when I tested them.

## Customer Reviews

### ⭐⭐⭐⭐⭐ These 5 pin relays work great
*by C***G on September 17, 2025*

These 5 pin, 30 amp, relays are well made and always good to have around. I have some spares and will use them on future projects. The wiring diagram printed on them is easy to understand and straight forward for the novice.

### ⭐⭐⭐⭐⭐ The Best Aux Relays with only 200 ma coil current draw
*by S***N on May 16, 2025*

Used two of these to make reversible DC motor control for continuous operation Definitely Excellent Value

### ⭐⭐⭐⭐⭐ Relay switches
*by T***N on June 2, 2025*

So far I’ve only used one wiring up a fan and it’s working flawlessly.

## Frequently Bought Together

- Nilight 50003R Automotive Set 5-Pin 30/40A 12V SPDT with Interlocking Relay Socket and Wiring Harness-5 Pack, 2 Years Warranty
- 10 Pack Inline Fuse Holder 12V, Professional 12 AWG Waterproof Fuse Holder with 35 Pcs (5A/7.5A/10A/15A/20A/30A/40A) Standard Car Fuses, Giwiemi in Line Fuses Holders 12v for Marine Auto and Circuits
- 12 AWG Inline Fuse Holder - 12 Gauge Fuse Holder for 30A Blade Fuse (6 Pack)

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**Shop now:** [https://www.desertcart.com.kw/products/47024300-automotive-relay-harness-set](https://www.desertcart.com.kw/products/47024300-automotive-relay-harness-set)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-19*