Accessories needed when connecting additional lights on modern cars with e.g. LED and Xenon auxiliary lights.
Unknown availability
Updated 10/8-2020 (more models may have been added afterwards, contact customer service if you have questions)
Audi
BMW
CHRYSLER
THE CITROEN
FIAT
FORD
HONDA
HYUNDAI
JEEP
Kia
LAND ROVERS
MAN
MAZDA
MERCEDES
MITSUBISHI
NISSAN
PEUGEOT
RENAULT
SEAT
SKODA
SUBARU
SUZUKI
TOYOTA
VAUXHALL
VOLKSWAGEN
VOLVO
Accessories needed when connecting additional lights on modern cars with e.g. LED and Xenon auxiliary lights.
Our Canbus decoder is a smart accessory that is needed when installing additional lights if you have a modern and newly manufactured car that has Canbus light monitoring on the high beam.
A "regular" traditional relay harness works by stealing an analog signal from the plus(+) power supply to the high beam when you turn on the high beam. When it detects an "ignition signal", the signal is passed on to the relay in the wiring harness. The relay works just like a normal switch (off and on). So the relay turns on the retrofitted additional lights at the same time you turn on the existing high beams.
If, however, you have a Canbus light monitoring system for the high beam on your car (most newly manufactured cars with LED and xenon after approx. 2016 have this), then a digital signal is instead sent to the high beam when the high beam is switched on. A "regular" traditional analog relay cable set cannot read this signal, but needs a Canbus Decoder to convert the digital signal to an analog signal so that the relay cable set can work.
How do I connect this?
Connecting this Canbus decoder is relatively simple. As a rule, the Canbus decoder is mounted inside the car's passenger compartment, where the digital signal can be picked up when the high beams are switched on from signal cables. The location differs between different car models, but the most common is that you find the signal cables at the diagnosis socket (OBD socket), but can also be under the steering wheel, behind the stereo, behind the glove compartment or similar.
In CANM8's app, you will find instructions on where to find the high beam digital signal cables for pretty much every car model on the market, if you are unsure. The app is available for both iOS and Android:
Once you've identified the digital signal wires, solder (recommended) or solder the wires from the Canbus decoder onto the digital signal wires. For the Canbus decoder to work, the Canbus decoder also needs to be connected with power (+ and -). Now the Canbus decoder should be plugged in and working!
When you have connected the Canbus decoder, you get an analog plus signal from the Canbus decoder, which you can connect any relay cable set to. So now retrofitted and switched on Extra light will come on at the same time as your main beam comes on.
How do I know if I need a Canbus decoder for my car?
Most new modern cars after about 2016 that are equipped with LED high beams or with combined high and low beams Xenon, have Canbus monitoring on the high beams and need this Canbus decoder to connect retrofitted additional lights. If you have halogen headlights, it is less likely that you need a Canbus decoder. The easiest way to check this is to check the information papers about your car yourself, e.g. user manual. If you have an older car, it is more likely that you do not have Canbus monitoring on the high beam and then you do not need the Canbus decoder. If you are unsure, you can always contact our customer service and they can help you.
ATTENTION! Even if you have a light monitoring system on your car, it is not certain that you need it. Do you have an older car with a simpler light monitoring system on e.g. reversing lights and indicators, so this is not needed. If you are unsure, always check this before you buy the product. If you are unsure, contact our support and they can check your particular vehicle whether you need it or not.
Can be ordered in package price together with relay cable set (1-4 outputs for extra light / led ramp) or only the Canbus decoder.
![]() | Flashing Red: Searching for CAN information. |
![]() | Solid Red: CAN information received with car model not yet identified. |
![]() | Solid Green: CAN information received and car model identified. |
![]() | Flashing Green: The car's speed detected (does not apply to this model). |
Connecting the various cables of the Canbus decoder
Red thread | > | Connect via a 5A fuse to a fixed 12V power source (+). |
BLACK thread | > | Connect to fixed Earth / minus source (-). |
WHITE thread | > | CAN HI connection : Connect to the Car's CAN HI cable (canbus source). |
BLUE thread | > | CAN LO connection : Connect to the Car's CAN LO cable (canbus source). |
PURPLE thread | > | High beam ignition Output signal: 12v (1A max) When the high beam is switched on, current is sent out on the cable. Connects to a relay harness. |
You can pay for the order safely and easily with Credit Card, Klarna, Paypal, Google Pay or Apple Pay. Shipping costs starts at only 9.90€. We use UPS and GLS for shipping.
Products in stock are normally shipped out within 1-2 working days. We process orders continuously and orders placed before 13 are normally sent at the same day. The shipment takes usually 3-7 days in Europe.
We want you as a customer to be 100% satisfied with your purchase. That's why we offer 14 days to return the products if you are not happy with it! Safe and carefree shopping at its best!
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