I was about to install the base yesterday and I realized I was about to make a big mistake. Once the base is in place identifying which end-stop is which, which PT100, which stepper, which cooling fan, which hot end power, etc. is going to be a frustrating nightmare. I recommend anyone just getting to this point to label the ends of all of the wires before you start buttoning things up. It'll save time during assembly now, and lots in troubleshooting/maintenance later!