Here is a common question that we get, what is the brown wire, blue wire, and green stripe wire? Which is black, which is white, and which is the ground? The good news is that the matching is very easy!
Brown is your hot wire so you want to connect that to your building's black wire. The blue is negative or return, so that will go to white. Green with yellow stripe is the ground and will go to the building green. (sometimes this will be a bare copper wire)
Brown to Black
Blue to White
Green to Green with Yellow Stripe
Refer to the image above for the visual version of the wiring guide. Remember to always kill the power at the breaker, not just the switch. Secure your connections with proper wire nuts or other connectors. Remember, safety first! π