This is from my 05 fse manual, I assume your computer is the same. It's the only spot it mentions the km/miles switch so hopefully it works for you.
Trip distance in Km
To program the trip distance in Km or Miles. Once the battery is
connected the display indicates that the program is active (metric or
imperial). To make the change connect the battery while holding in
one of the buttons, the change will appear on the screen. This function
remains completely in memory even though the battery may not be
connected.
Trip distance in Km
To program the trip distance in Km or Miles. Once the battery is
connected the display indicates that the program is active (metric or
imperial). To make the change connect the battery while holding in
one of the buttons, the change will appear on the screen. This function
remains completely in memory even though the battery may not be
connected.
