Many cars built for the American market flash their rear indicators in red, often through the same lamp as the brake light. In Belgium that is not allowed. European lighting rules require rear direction indicators to show amber light, so a US-spec car with red rear indicators will not pass the individual approval (homologation) and cannot get Belgian plates until the lights are converted.
The good news: this is one of the most common fixes on a US import, and it is very solvable. This guide explains what the inspector checks, what usually has to change, what it costs on a real file and in which order to do things so you do not pay twice.
The short answer
- Red rear indicators fail. UN Regulation 48, which Belgium applies, lists the colour of direction-indicator lamps as amber.
- A rear fog lamp is required. Most US cars do not have one, so one is added during the conversion.
- Headlights must be EU-approved. US headlights carry a DOT marking, not the European E-mark, and often need to be replaced or confirmed by the manufacturer.
- Side markers and reflectors must follow the European colour rules: amber at the side, red only at the rear.
- All of this is checked during the individual approval, before the car can be registered at the DIV.
Why American cars have red turn signals
US lighting rules allow rear turn signals to be either red or amber. Many manufacturers choose red because it lets them combine the brake light and the turn signal in one lamp, which is cheaper and gives designers more freedom. Many models from brands like BMW, Ford, GM, Jeep and Tesla have red rear indicators in the US and amber ones on the European version of the same car.
In Europe there is no choice. UN Regulation 48 on the installation of lighting sets the colours: direction indicators amber, stop lamps red, rear fog lamp red. The rules also say a stop lamp and a direction indicator may not be combined in the same function. So the US setup fails on two points at once.
What the inspector checks on a US car
When a vehicle comes from outside the EU without a European type approval, it needs an individual approval before it can be registered. The inspection centre or technical service compares the car with the European requirements. On lighting, these are the points we see most often on US cars:
- Rear direction indicators. Must flash amber. Red, or a brake light that also flashes, is refused.
- Rear fog lamp. At least one red rear fog lamp, with its own switch and a warning light on the dashboard.
- Headlights. Need a European approval mark (an E in a circle) and the correct beam pattern. US units marked DOT only are a problem.
- Side marker lamps. The amber side markers on US cars must match the European rules. Depending on the car, they are recoded, rewired or disabled.
- Reflectors. Amber at the side, red at the rear.
Outside of lighting, the inspector also checks the speedometer (it must show km/h), brakes, tyres, seatbelts, noise and emissions. If your car has no Euro emission class on its papers, read our guide on what to do when there is no Euro class, because it affects your BIV and access to low emission zones.
How the conversion is usually done
There is no single method. It depends on the model, the year and how the car was built. The most common options:
- EU tail lights. If the same model was sold in Europe, the European tail lights often fit directly. Sometimes the car's software must be coded so the new lamps work correctly.
- Coding only. On some cars the lamp housing already contains a separate segment that can be switched to amber through the software. This is the cheapest fix, but it only works if the hardware is already there.
- Conversion module plus amber lamps. When there is no European version, a specialist separates the brake and indicator signals and adds amber lamps.
- Rear fog lamp. Added as a separate unit or through an EU part that already contains it, plus a switch and dashboard indicator.
A warning about cars that were already modified. If a previous owner swapped bulbs, modules or lamps, it can take a long search to find out what is installed and what still needs to change. Specialist garages sometimes refuse these cars. Ask the seller before you buy whether the lights are original.
Can you just put amber bulbs in? Usually not. The light that comes out of the lamp must be amber. An amber bulb behind a red lens does not give amber light, and the inspector looks at the result, not at the bulb.
A real example: Mercedes GLE 350 from New Jersey
One of our completed files was a petrol Mercedes GLE 350 bought in New Jersey. To get it approved in Belgium:
- The homologation file was built on an official Mercedes data sheet.
- The modifications were the headlights and an added rear fog lamp, for about €2,000.
- The homologation itself cost about €400.
- From purchase in the US to Belgian plates took 8 weeks in total.
Costs depend heavily on the brand and model. Some cars only need coding. Others need new headlights, which are the most expensive part. On our US import files, we budget homologation including the Belgian inspection at roughly €2,000 to €2,800, depending on what the car needs.
The right order of steps
The most expensive mistake is converting the lights before you know exactly what the inspector will ask for. This is the order we work in:
- Before buying: check the VIN, look at the rear lights and headlights in the photos, and check whether a European version of the model exists. This tells you roughly what the conversion will cost.
- Customs clearance and E705: the car is cleared by a customs agent and you receive the E705 vignette. US-built cars can enter at 0% import duty if their US origin can be proven, plus 21% VAT. See our customs clearance page and what to do if your E705 is rejected.
- Technical data: collect the manufacturer's data or a certificate listing the approvals. If there is no COC, read our guide on individual homologation without a COC.
- Lighting conversion: only now, with a clear list of what must change.
- Individual approval and inspection: the car is presented and checked.
- Registration: with the approval, the pink form with E705 and your insurance, the car is registered at the DIV and you receive your plates.
For the complete picture on costs and taxes, see our guide to importing a car from the USA to Belgium and the complete 2026 import guide.
Already driving a US car in Europe?
We regularly get calls from owners whose US-spec car has been on the road in another EU country for years, and who suddenly have a problem with the lights at an inspection or when moving to Belgium. A periodic inspection does not always look at lighting the way an individual approval does. If you are moving to Belgium with your car, read our removal goods guide as well, because the lighting rules still apply when the car enters tax-free.
FAQ
Will my US car fail the Belgian inspection because of red turn signals?
Yes. Rear direction indicators must show amber light under UN Regulation 48. Red rear indicators have to be converted before the car can be approved and registered.
Is a rear fog lamp mandatory in Belgium?
Yes. A red rear fog lamp is required on passenger cars. Most US cars do not have one, so it is added during the conversion.
Can I keep my American headlights?
Usually not. Headlights need a European approval mark. US headlights marked DOT only are often replaced with EU-approved units, unless the manufacturer can confirm they meet European requirements.
How much does it cost to convert the lights on a US car?
It depends on the model. Some cars only need software coding. On our Mercedes GLE 350 file, new headlights plus a rear fog lamp came to about €2,000, plus about €400 for the homologation.
How long does it take?
The conversion itself is usually quick once the parts are available. On our GLE file the full process, from purchase in the US to Belgian plates, took 8 weeks.
Can AutoLink handle the whole process?
Yes. We handle customs, E705, the homologation file and registration, and we coordinate the lighting conversion with specialist garages. You get one point of contact from the US seller to Belgian plates.
Get a clear answer before you buy
Send me the VIN and a photo of the rear lights and headlights on WhatsApp or by email at info@autolink-mat.be, and I will tell you what needs to change and what it is likely to cost. More about the process on our homologation page.
Written by Tornike Tchanturia, founder of AutoLink M.A.T, Vredebaan 56, 2640 Mortsel. VAT BE1037023931. Sources: UN Regulation 48 on the installation of lighting (EUR-Lex) and Vlaanderen.be: importing a vehicle from outside the EU.