The Honda topcase spoiler lights are only illuminated together with the brake lights.
Using the dimmer module the same illumination as with a GL 1500 spoiler is possible.
The module has to be connected with the wires of rear light and brake light.
The spoiler illumination is constantly lit with reduced lightness.
Using the brakes, the system will change to full lightness.
Since the module is very small, it can be fitted directly into the cable harness.
Assembly Instructions (german)