Not Kellermann, but I recently installed DENALI lighting on my bike and wanted to share my experience in case it helps.
I have a late ’25 R18B (Premium), and based on what I’ve seen in several threads here, there appear to be some wiring changes on this model. The CAN bus port referenced in older posts either does not exist on my bike or is not accessible in the same way. I was also unable to find any viable way to connect a CANsmart on my specific bike.
I worked with DENALI tech support, but they did not have prior experience with this particular model year/configuration, and we eventually ran out of options. As a result, I spent a couple of days metering every accessible connector under the seat and identifying which ones were triggered by brake, running, or turn signals.
I ultimately went with a direct-wired solution, which worked well for my setup. I installed DENALI B6 lights, which use three wires: ground, running light power, and brake/turn trigger.
On my bike, I was able to locate a true switched 12V source from a factory connector intended for adding a trunk. I used that for the running light power. All grounds (for these and other accessories) are centralized and run directly to the battery negative.
For the final trigger wire, I found two separate trigger wires—one for the left side and one for the right—located on different connectors. On my bike, these trigger wires sit at approximately 6V at rest and jump to 12V when either the brake is applied or a turn signal is activated. This worked reliably for my installation.
This approach worked on my late ’25 R18B Premium, and while I can’t say it will be identical on every bike, it may be helpful if you’re running into similar challenges installing the Kellermanns.
Hope this helps.
