How to replace the BCM?

Hello, my rear brake light on the passenger side is not working. Two separate mechanics confirmed it is not the bulb and rather and electrical issue. A Nissan dealer traced the issue back to BCM and recommended a replacement. Also, it is worth noting that the car has a Start-X remote start kit installed. I am searching for step-by-step instructions with images or a video tutorial on how to replace the BCM. Thank you