---
product_id: 41485480
title: "[ALL STAR TRUCK PARTS] 4-Headlight Relay Wiring Harness H4 Headlamp Light Bulb Ceramic Socket Plugs Set"
brand: "all star truck parts"
price: "436 kr"
currency: DKK
in_stock: true
reviews_count: 8
url: https://www.desertcart.dk/products/41485480-all-star-truck-parts-4-headlight-relay-wiring-harness-h4
store_origin: DK
region: Denmark
---

# Direct battery power bypass Prevents overheating plugs Universal H4 ceramic socket plugs [ALL STAR TRUCK PARTS] 4-Headlight Relay Wiring Harness H4 Headlamp Light Bulb Ceramic Socket Plugs Set

**Brand:** all star truck parts
**Price:** 436 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Brighten your ride, ditch the flicker!

## Quick Answers

- **What is this?** [ALL STAR TRUCK PARTS] 4-Headlight Relay Wiring Harness H4 Headlamp Light Bulb Ceramic Socket Plugs Set by all star truck parts
- **How much does it cost?** 436 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/41485480-all-star-truck-parts-4-headlight-relay-wiring-harness-h4)

## Best For

- all star truck parts enthusiasts

## Why This Product

- Trusted all star truck parts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flicker-Free Focus:** Eliminates dimming and flickering for reliable night drives
- • **Cool Under Pressure:** Ceramic sockets prevent overheating and extend plug life
- • **Halogen Ready Upgrade:** Perfect fix for upgrading to halogen bulbs without electrical headaches
- • **Plug & Play Compatibility:** Fits 7"6", 4x6", 5-3/4" and all H4 headlight bulbs effortlessly
- • **Power Upgraded, Switch Protected:** Bypasses headlight switch power draw, pulling directly from battery for consistent brightness

## Overview

The All Star Truck Parts 4-Headlight Relay Wiring Harness is a ceramic socket plug set designed to eliminate dim, flickering, and malfunctioning headlights by bypassing the headlight switch and drawing power directly from the battery. Compatible with various H4 headlight sizes, it prevents overheating and supports halogen bulb upgrades for a reliable, professional-grade lighting solution.

## Description

Full description not available

## Features

- This Harness Fixes:
- Dim Headlights, Flickering Headlights, Back Feeding Power, Malfunctioning Headlights when using Hi/Low Beams
- Also fixes: Overloading the Headlight Switch, Overheating Plugs
- If you are upgrading to Halogen Bulbs or are having trouble with your 7"6", 4x6", 5-3/4" or any other H4 plug headlights not working properly, this is your fix!!
- THIS HARNESS BYPASSES THE POWER DRAW FROM THE HEADLIGHT SWITCH AND PULLS THE POWER DIRECTLY FROM THE CARS BATTERY, BUT STILL USES THE STOCK HEADLIGHT SWITCH TO ACTIVATE THE RELAYS TO TURN THE HEADLIGHTS ON AND OFF.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | All Star Truck Parts |
| Material | Ceramic |
| Item Weight | 0.25 Kilograms |
| Cable Type | Headlight Wiring Harness |
| Connector Type | Ceramic Plugs |
| Wire Diameter | 1.52 Millimeters |
| Manufacturer | All Star Truck Parts |
| Item Weight | 8.8 ounces |
| Package Dimensions | 7.52 x 4.8 x 1.5 inches |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | ASTPH44 |

## Product Details

- **Brand:** All Star Truck Parts
- **Material:** Ceramic
- **Item Weight:** 0.25 Kilograms
- **Connector Type:** Ceramic Plugs
- **Wire Diameter:** 1.52 Millimeters

## Images

![[ALL STAR TRUCK PARTS] 4-Headlight Relay Wiring Harness H4 Headlamp Light Bulb Ceramic Socket Plugs Set - Image 1](https://m.media-amazon.com/images/I/812LnEhwuLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Surprisingly decent
*by A***N on August 31, 2024*

This was a retrofit for a 4th Gen firebird, using h1 and 9005 projectors. Plugs didn't matter since I would be changing them anyway. The wiring actually feels decent, no idea if it's OFC or AL clad. the relays seem decent. I ran a 3A diode on pins 87 to keep my low beams at the same time as my projector high beams, works great so far.

### ⭐⭐⭐⭐ decent kit, works. Needed to repin connector which was easy. 1984 k30
*by S***S on June 12, 2023*

High and low beam OEM harness side was flip flopped. I quickly swap the pins around and it worked! I am happy with the purchase. It took 60 minutes to install and I had to temporarily remove both batteries.Squarebody1984 k30 crew cab dually 454

### ⭐⭐⭐⭐⭐ Let there be light
*by S***G on February 9, 2024*

This harness enables your headlights to run directly off the battery. The harness just plugs into your existing headlight socket so your headlight switch still operates the headlights. The new harness has two wires that go to the battery and four ground wires, very simple. Take a picture of your headlights before and after, you will be amazed at the difference.

## Frequently Bought Together

- [ALL STAR TRUCK PARTS] 4-Headlight Relay Wiring Harness H4 Headlamp Light Bulb Ceramic Socket Plugs Set
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- Parts N Go 4x6 Rectangular Plain Conversion Headlights Kit Sealed Beam Glass Lights with Halogen High/Low Bulbs Compatible with Cars/Trucks from 1976-1992 - H4656 H4651 60/55w 9003/H4

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**Shop now:** [https://www.desertcart.dk/products/41485480-all-star-truck-parts-4-headlight-relay-wiring-harness-h4](https://www.desertcart.dk/products/41485480-all-star-truck-parts-4-headlight-relay-wiring-harness-h4)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-25*