This is a quick one just showing how the Arduino is connected to the bike. I take no credit for this code, this was compiled by the folks over at https://www.pedelecs.co.uk/ There is not a lot of room to work with so this can get difficult. You need to know how to solder You will need a basic understanding of Arduino I take no responsibility if you break your bike. This is a pretty easy mod. Just follow the diagram, the wire colours should match up if you have the 2021 version. This might also apply to others. I have been running this for 7 months now with no failures. Please leave any questions in the comments.