Installing a CAN-bus Reader for Auxiliary Lights – What to Know
CAN Modules Unique?
When adding auxiliary lights to a modern vehicle, it’s no longer as simple as finding a 12V signal wire. Most newer vehicles use digital CAN-bus systems, which means the only way to detect high beam activation is through CAN signal decoding.
To install a CAN-bus reader like those from Styrestrøm, you’ll typically connect to the vehicle’s CAN high and CAN low wires — usually found near the headlight control module or behind the dashboard. Once connected, the module passively listens for specific messages.
After installation, the module reads high beam activation (even in adaptive systems) and activates an output to control a relay or other device. This output is safe, stable, and won’t trigger any dashboard errors or malfunctions.
Styrestrøm modules are designed for quick installation — typically 15–20 minutes — and come pre-programmed for common car models. For special cases, we also offer custom signal profiles.
To install a CAN-bus reader like those from Styrestrøm, you’ll typically connect to the vehicle’s CAN high and CAN low wires — usually found near the headlight control module or behind the dashboard. Once connected, the module passively listens for specific messages.
After installation, the module reads high beam activation (even in adaptive systems) and activates an output to control a relay or other device. This output is safe, stable, and won’t trigger any dashboard errors or malfunctions.
Styrestrøm modules are designed for quick installation — typically 15–20 minutes — and come pre-programmed for common car models. For special cases, we also offer custom signal profiles.