Help with installing shift sensor to Prime

Hello everyone! I received a shift sensor from Nireeka for my Prime awhile back and I couldn’t figure out how to install it, even after watching YouTube videos. I couldn’t find a YouTube video with the exact motor the Prime has and how to open it up and install the shift sensor properly. Also, the Prime has all of its wiring integrated into the frame, so honestly I really need a detailed video on exactly how to install it on the Prime.
If someone would be kind enough to give me very detailed step by step instructions with pictures, or even a video tutorial, I would greatly appreciate it. I want my Prime to last as long as possible, and the shift sensor is absolutely essential for a bike this powerful. Thank you!