---
product_id: 60786355
title: "KASLIGHT H6054 LED Headlight H4 Relay Harness for Jeep Toyota Subaru 9003 | Upgrade sealed beam headlights with fused wiring. Fits H6054 H6024 9003 5x7 7x6 LED conversions and solves dim light issues"
brand: "kaslight"
price: "$56.17"
currency: USD
in_stock: true
category: "Kaslight"
url: https://www.desertcart.us/products/60786355-kaslight-h6054-led-headlight-h4-relay-harness-for-jeep-toyota
store_origin: US
region: United States of America
---

# 360W stable power output Fixes dim & flickering headlights Plug-n-play vehicle-specific fit KASLIGHT H6054 LED Headlight H4 Relay Harness for Jeep Toyota Subaru 9003 | Upgrade sealed beam headlights with fused wiring. Fits H6054 H6024 9003 5x7 7x6 LED conversions and solves dim light issues

**Brand:** kaslight
**Price:** $56.17
**Availability:** ✅ In Stock

## Summary

> 💡 Illuminate your ride with power and precision — don’t settle for dim, drive bright!

## Quick Answers

- **What is this?** KASLIGHT H6054 LED Headlight H4 Relay Harness for Jeep Toyota Subaru 9003 | Upgrade sealed beam headlights with fused wiring. Fits H6054 H6024 9003 5x7 7x6 LED conversions and solves dim light issues by kaslight
- **How much does it cost?** $56.17 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/60786355-kaslight-h6054-led-headlight-h4-relay-harness-for-jeep-toyota)

## Best For

- kaslight enthusiasts

## Why This Product

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

## Key Features

- • **Protect & Enhance:** Fused relay wiring prevents overload and overheating, extending headlight system lifespan.
- • **Hassle-Free Upgrade:** Vehicle-specific plug-n-play harness designed for Jeep, Toyota, Subaru LED conversions.
- • **Brighten Your Night Drives:** Delivers direct battery power to LED headlights for superior brightness and reliability.
- • **Double Ground Fix for Toyota:** Specially engineered to fix Toyota Pickup/Tacoma double ground wiring issues with ease.
- • **Solve Dim & Flickering Issues:** Eliminates voltage drops and back feeding power problems for consistent beam performance.

## Overview

The KASLIGHT H6054 LED Headlight H4 Relay Harness is a vehicle-specific, plug-n-play wiring upgrade designed to fix dim, flickering, and malfunctioning LED headlights on Jeep, Toyota, and Subaru models. Delivering a stable 360W power supply directly from the battery, it solves common wiring issues including double ground faults in Toyota trucks, improves high/low beam performance, and protects your headlight system with fused relay wiring for reliable, bright night driving.

## Description

Buy KASLIGHT H6054 LED Headlight H4 Relay Harness for Jeep Toyota Subaru 9003 | Upgrade sealed beam headlights with fused wiring. Fits H6054 H6024 9003 5x7 7x6 LED conversions and solves dim light issues: Wiring Harnesses - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- FIX DIM HEADLIGHTS & IMPROVE LIGHT OUTPUT: Upgrade your old factory headlight wiring with this H4 LED headlight relay harness kit. Fix common issues including dim headlights, flickering headlights, voltage drop, weak high beam/low beam performance and insufficient power supply. This fused relay wiring harness delivers stable battery power directly to your H6054 LED headlights, improving brightness and reliability during night driving.
- UPGRADE MADE SIMPLE: As Toyota Pickup and Toyota Tocoma use a double ground which leads to the headlights not work or only one beam work, this h4 Harness is a must to fix the problem.Ditch the hassle and save some serious cash by using this h4 wiring harness to flip your headlight system from ground-switched (2 toggled grounds + 1 constant hot) to positive-switched (2 toggled hots + 1 constant ground). Easy peasy!
- FIX DIM HEADLIGHT ISSUES: This 1set 2-headlights h4 headlight relay harness Fixes cars with 2 pcs H4 plug headlamps, such as 7x6 5x7 headlights. Problems like Dim Headlights, Flickering Headlights, Back Feeding Power, Malfunctioning Headlights when using Hi/Low Beams can be fixed with this kaslight 2-headlight h4 headlamp relay. Make a big improvement for visibility on your cars at night.
- IMPORTANT NOTICE: If your socket pin is not standard, KASLIGHT H4 9003 HB2 Wiring Harness is needed, as To-yota Pickup and To-yota Tocoma use a double ground which leads to the headlights not work or only one beam work, this Harness is a must to fix the problem.
- ALSO FIXES: Overloading the Headlight Switch, Overheating Plugs. If you are upgrading to LED Bulbs or are having trouble with your 7"x6"headlight, 4x6"led headlight, 5-3/4" or any other H4 plug headlights not working properly, plug-n-play conversion harness, this is your fix!! Package includes one set h4 socket led headlight relay kit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B9QQMMH |
| Auto Part Position | Inner |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #33,401 in Automotive ( See Top 100 in Automotive ) #72 in Automotive Replacement Electrical Wiring Harnesses |
| Brand Name | KASLIGHT |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,003) |
| Fit Type | Vehicle Specific Fit |
| Included Components | H4 Headlight Connector |
| Light Color | 4000K Cool White, 6500K Bright White |
| Light Source | Light Emitting Diode (LED) |
| Manufacturer | KASLIGHT |
| Manufacturer Part Number | KAJE-0003 |
| Model Number | 8542081869 |
| Number of Items | 2 |
| Number of Packs | 1 |
| Number of Pieces | 2 |
| Set Name | 1 Set |
| UPC | 653437481838 |
| Unit Count | 2 Count |
| Wattage | 360 watts |

## Product Details

- **Brand:** KASLIGHT
- **Fit Type:** Vehicle Specific Fit
- **Included Components:** H4 Headlight Connector
- **Light Source Type:** Light Emitting Diode (LED)
- **Wattage:** 360 watts

## Images

![KASLIGHT H6054 LED Headlight H4 Relay Harness for Jeep Toyota Subaru 9003 | Upgrade sealed beam headlights with fused wiring. Fits H6054 H6024 9003 5x7 7x6 LED conversions and solves dim light issues - Image 1](https://m.media-amazon.com/images/I/71MeZXKnBCL.jpg)

## Questions & Answers

**Q: Will this work on a 1985 four runner?**
A: jeez...every three months the same question...It'll work great if you're intent is to to set your vehicle on fire and collect the insurance...IT'S GARBAGE!! ...the wire is criminally undersized for the application...it should be 14-16g but it's only 22g ...this can cause it to overheat, melt the insulation and start a fire.....

**Q: Did not come with manual, where can I find it online?**
A: Dear customer,

Pretty sorry for this trouble. Kindly please send email to kaslight2@outlook.com, we will send you the manual accordingly

**Q: Will this work on an 87 toyota pickup ?**
A: I installed it on my 88 Toyota pickup 2wd. The high beam did not work. The high beam relay would work but would not turn the high beam on. Found the wiring on load side of the relay was wired wrong so I had to pull the wires out and relocate them. High and low work good now. If the relays work, but won't turn the lights on, the issue is on the load side. Check the wiring on the relays.

**Q: Will this work on a 93 chevy blazer if not what harness would?**
A: I dont know alot about Chevy blazer but work great in my 93 XJ. I dont see why not,

## Frequently Bought Together

- KASLIGHT 1Set 2 Headlight Wiring Harness H4 Relay Harness H6054 LED Headlight Connector Socket Kit for 9003 6054 Toyota 95-97 Tacoma 88-95 Pickup Headlamp Fix Dual Light Dim Dual Ground Problem
- HWSTAR 2022 180W 1000% Bright H6054 5x7 7x6 Led Headlights Compatible with Jeep Cherokee XJ Wrangler YJ [ DOT][Anti-glare][DRL Turn Signal][Hi/Low Sealed Beam] Ford Chevy GMC Toyota Nissan Dodge etc

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-08-15*