LED Trailer Lights & Commercial Vehicle Lighting

We supply a full range of Lucidity LED trailer lights, including rear combination lamps, marker lights, number plate lights and interior lighting.

Our products are suitable for:

• Trailers and caravans
• HGVs and commercial vehicles
• Plant and construction equipment

All lights are designed for 12V and 24V systems and built for durability in demanding environments.

Yes — all our lights are E-marked and fully compliant with UK road regulations, including the Road Vehicles Lighting Regulations 1989.

This means they are approved for use on:

• Road-going trailers
• Caravans
• Commercial vehicles

LED trailer and caravan lights often cause dashboard warning messages, hyper flashing indicators, or flickering lights because they use significantly less electrical power than traditional filament bulbs.

Modern vehicles use CANBUS electrical systems to monitor lighting circuits. These systems detect faults by measuring electrical load. When LED trailer lights are connected, the vehicle may interpret the lower power draw as a bulb failure, even though the lights are working correctly.

Common symptoms of LED trailer light issues

• Rapid flashing indicators (hyper flashing)
• Dashboard warnings such as “trailer light fault”
• Flickering or pulsing rear lights
• Intermittent or inconsistent lighting behaviour

These issues are especially common when:

• Upgrading older trailers to LED lighting
• Using modern vehicles with sensitive towing electrics
• Connecting LED trailers via 7-pin or 13-pin sockets

In most cases, this is not a wiring fault but a simple electrical mismatch between the vehicle and trailer.

How to fix flashing trailer lights quickly

The easiest and most reliable solution is to install a LED fault eliminator, which restores the correct electrical load so the vehicle recognises the trailer lights properly.

The 68007 LED Fault Eliminator is a plug-and-play solution designed for UK trailers and caravans. It works by simulating the load of traditional bulbs, preventing CANBUS errors and stabilising your lighting system.

View product: https://trailersolutions.co.uk/product/led-fault-eliminator/

• Stops hyper flashing indicators
• Removes dashboard warning messages
• Prevents flickering or intermittent lighting
• Plug & play – no wiring required
• 13-pin towing setups

Why this fix works

By increasing the electrical load seen by the vehicle, a fault eliminator ensures the CANBUS system receives the signal it expects. This eliminates false fault detection and allows the trailer lighting to operate normally.

Without this correction, the vehicle may continue to misread LED lighting as a failure, leading to ongoing flashing or warning issues.

Important safety note

Driving with faulty or flashing trailer lights can be unsafe and may result in your vehicle being considered not roadworthy. Always ensure your lighting is functioning correctly before towing.

Using a properly designed fault eliminator is one of the simplest ways to ensure reliable, legal, and safe trailer lighting operation.

In many cases, yes — especially if you’re towing with a modern vehicle.

LED trailer and caravan lights use much less power than traditional filament bulbs. While this is more efficient, it can cause problems with newer vehicles that use CANBUS electrical systems to monitor lighting circuits.

These systems expect to see a certain level of electrical load. When LED lights are fitted, the lower power draw can be misinterpreted as a fault, even though everything is working correctly.

When you typically need a fault eliminator

You may need a fault eliminator if you experience:

• Rapid flashing indicators (hyper flashing)
• Dashboard warnings such as “trailer light fault”
• Flickering or inconsistent trailer lights
• Lights not working properly when connected

This is very common with vehicles from brands such as Ford, Volkswagen, Audi, BMW, Mercedes and Mazda, particularly when towing LED-equipped trailers.

When you might NOT need one

You may not need a fault eliminator if:

• Your vehicle is older and does not monitor trailer lighting
• Your vehicle has a factory-installed towbar designed for LED compatibility
• Your trailer still uses traditional bulb lighting

The simple solution

If you are experiencing any of the issues above, a fault eliminator is the quickest and most effective fix.

The 68007 LED Fault Eliminator works by simulating the electrical load of traditional bulbs, allowing your vehicle to recognise the trailer lights correctly.

View product: https://trailersolutions.co.uk/product/led-fault-eliminator/

• Plug & play installation (no wiring required)
• Eliminates dashboard warnings
• Stops hyper flashing indicators
• Ensures stable and reliable lighting

Final advice

If your LED trailer lights are working but your vehicle is showing errors or flashing indicators, the issue is almost always electrical compatibility — not a wiring fault.

A fault eliminator provides a simple, reliable solution that restores proper operation and helps ensure your trailer lighting remains safe and road legal.

Choosing the right LED trailer lights depends on your trailer type, wiring setup, and the specific lighting functions required for safe and legal use in the UK.

1. Check your trailer type and use

Different trailers require different lighting setups. For example:

• Caravans – often need full rear combination lights with fog and reverse
• Plant and commercial trailers – require durable, heavy-duty LED units
• Utility trailers – may use simpler rear light configurations

Make sure the lights you choose are suitable for your trailer’s application and environment.

2. Confirm the voltage

Most trailer lights are designed for either:

• 12V systems (cars, caravans, light trailers)
• 24V systems (trucks and heavy-duty applications)

Some lights are dual voltage, but many are not — using the wrong voltage can cause failure or poor performance.

3. Match the correct functions

Trailer lights are not all the same. You must choose lights with the correct functions for your setup, such as:

• Tail light
• Brake light
• Indicator
• Fog light (usually nearside in the UK)
• Reverse light (usually offside)
• Number plate illumination

Selecting the wrong combination (for example, reverse instead of fog) is a common mistake and can lead to failed MOTs or unsafe towing.

4. Check the connector type

Trailer lights use different connection systems, including:

• 5-pin connectors (common on modern LED lights)
• 7-pin or 13-pin trailer plugs

Always ensure the light is compatible with your trailer’s wiring system to avoid installation issues.

5. Consider LED compatibility with your vehicle

LED trailer lights are more efficient and longer lasting than traditional bulbs, but they can cause issues with modern vehicles.

Because LEDs draw less power, some vehicles may:

• Trigger dashboard warning messages
• Cause rapid flashing indicators (hyper flashing)
• Misread the trailer as having a fault

6. Use a fault eliminator if needed

If you experience any of the above issues, the solution is to install a fault eliminator.

The LED Fault Eliminator (68007) is designed to:

• Balance the electrical load between vehicle and trailer
• Prevent CANBUS warning errors
• Stop flickering and hyper flashing
• Ensure your LED lights work correctly

It’s a simple plug-and-play device that resolves most compatibility issues with modern tow vehicles

Yes, you can replace halogen (filament) trailer lights with LED lights, and it’s a very common upgrade. LED trailer lights offer better visibility, faster response times, and a much longer lifespan compared to traditional bulbs.

However, there are a few important things to consider before making the switch.

Benefits of upgrading to LED trailer lights

Switching to LED lighting provides several advantages:

• Brighter and clearer illumination for improved safety
• Faster response time when braking or indicating
• Lower power consumption
• Longer lifespan with minimal maintenance
• Greater resistance to vibration and water (especially IP67-rated units)

These benefits make LED lights ideal for caravans, plant trailers, and commercial towing applications.

Potential issue: vehicle compatibility

The most common problem when upgrading to LED lights is compatibility with modern vehicles.

Many newer cars use CANBUS systems to monitor lighting circuits. These systems expect the higher electrical load of halogen bulbs. Because LED lights use less power, the vehicle may think there is a fault.

This can cause:

• Rapid flashing indicators (hyper flashing)
• Dashboard warning messages
• Flickering or inconsistent lighting

How to fix LED compatibility issues

If you experience any of these problems, the solution is to use a fault eliminator.

The 68007 LED Fault Eliminator is designed to balance the electrical load between your vehicle and trailer, allowing LED lights to function correctly without errors.

View product: https://trailersolutions.co.uk/product/led-fault-eliminator/

• Plug & play installation
• Stops flashing and warning messages
• Works with most 7-pin and 13-pin towing systems
• No rewiring required

Other things to check before upgrading

Before replacing your halogen lights with LED, make sure you:

• Choose the correct voltage (12V or 24V)
• Match the correct functions (fog, reverse, indicator, etc.)
• Ensure compatibility with your trailer’s connector (5-pin, 7-pin, or 13-pin)
• Confirm whether you need a built-in or separate number plate light

Legal and safety considerations

In the UK, trailer lights must be fully functional and meet road safety standards. This includes:

• Working brake lights, indicators, and tail lights
• A fog light on the nearside (left) for most trailers
• Clear and visible number plate illumination

If your lighting system is not working correctly, your vehicle may be considered not roadworthy.

Final advice

Replacing halogen trailer lights with LED is a worthwhile upgrade, but compatibility is key. Most issues arise not from the lights themselves, but from the vehicle’s electrical system.

If your LED lights flash or trigger warnings, a fault eliminator provides a simple and reliable fix to ensure safe, legal, and hassle-free towing.