While there is a youtube video on how to change the C7 display from mph to kph, it doesn't explain what all the words and numbers mean on the display. I mean, I know what PAS is but it has some icons and no explanation of what they mean. Is there an online manual for this? It has 'trip 1' and 'trip 2' but I would like to know the total number of miles -- any way to find out? How do I zero out trip 2? I was able to zero out trip 1 but not trip 2. Also the display shows 'BMS' and a number like 51.4. What does BMS mean in this context?