The speedometer illumination on my 2017 m3w outfitted with the ash dash and instrumentation package has failed. Fuse is good. Tach still lights. In warranty but dealer is a 1200 mile round trip. I am going in the access opening in the fuse box to see what I can find. Anyone dealt with this before? Any advice greatly appreciated since wiring diagrams are apparently nonexistent. Everything else on the speedometer is working properly I just don't get illumination when I turn on the lights.
