ARK AHI7 Inline ECU Harness Kit – 7 Pin Flat Socket, 1.5m Round Cable, Nite-Lite, LED Compatible (SKU: AHI7)
$95.00 $150
ARK AHI7 inline ECU harness kit prevents LED trailer light errors on modern vehicles. Includes 7 pin flat socket, 1.5m round cable, and built-in Nite-Lite. Suitable for most vehicles (non-CANBUS).
In stock
ARK AHI7 Inline ECU Harness Kit – 7 Pin Flat Socket, 1.5m Round Cable, Nite-Lite (SKU: AHI7)
The ARK AHI7 ECU harness kit is the ideal solution for resolving trailer lighting issues caused by modern vehicle electronics. Many European cars emit pulse current for lighting systems, which often conflicts with LED trailer lights that require constant current – resulting in dashboard errors, flickering lights, or complete malfunction.
This inline harness includes a 7 pin flat trailer socket, 1.5 metre round vehicle-side cable, and a built-in Nite-Lite LED indicator for improved visibility. It ensures your trailer lights work consistently and error-free with most non-CANBUS vehicles.
Key Features:
- ECU Harness: Filters and stabilises signal to trailer lights
- Cable Length: 1.5 metres (round cable for easy routing)
- Socket Type: 7 Pin Flat trailer plug (standard Australian type)
- Compatibility: Suitable for most vehicles – NOT compatible with CANBUS systems
- Extras: Integrated Nite-Lite inside the socket
- Application: Ideal for trailers with LED lighting
Common Issues This Kit Solves:
- Flickering trailer lights or failure to light
- Warning symbols on vehicle dashboard
- Pulse current incompatibility with LED systems
Why Choose ARK’s ECU Harness?
- Plug-and-play installation – no coding or programming required
- Designed for Australian vehicles and trailers
- Backed by ARK’s trusted quality and durability
Make LED trailer lighting problems a thing of the past – with ARK’s AHI7 inline ECU harness kit.
📘 What is Pulse Current and Why Does It Cause Trailer Light Issues?
In many modern vehicles—especially European brands like BMW, Mercedes, Volkswagen, and Audi—the electrical system is controlled by an advanced onboard computer. Instead of constantly sending power to the tail lights, these vehicles use something called “pulse current” (also known as pulsed voltage or PWM – pulse-width modulation).
This system sends quick bursts of electricity to check whether lights are functioning, instead of a steady power flow. It works fine for regular filament bulbs, but…
❌ LED trailer lights don’t like it.
⚠️ Note: ARK ECU harness kits are not suitable for vehicles using CANBUS systems, which require a different type of interface.
LEDs need a stable, constant current to operate properly. When they receive pulsed signals, they may:
Flicker randomly
Not turn on at all
Trigger dashboard errors
Cause warning lights or fault codes
That’s where problems start – your car thinks the trailer lights are broken, even when they’re not.
💡 How to Fix It?
To solve this issue, you need an ECU harness or a pulse-stabilising adapter, like the [ARK AHI7 Inline ECU Harness Kit].
This device: ✅ Converts pulse current into stable output
✅ Makes your trailer LED lights work smoothly
✅ Prevents dashboard flickers and error codes
✅ Installs easily with no rewiring or programming
🔧 Is Your Car Affected?
You might need an ECU harness if:
You drive a modern car (especially a European make)
Your trailer lights flicker or don’t work properly
You’re using LED trailer lights
Your dashboard shows “bulb out” warnings
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