I'm going to assume for a moment that you have an older model and it is a stock 1000w Bafang bbshd with the UART protocol. You don't just want that protocol, you want it for Bafang midrives, otherwise it won't run properly, nor will it plug in, because Bafang likes to switch things up a bit with their plugs. All the displays that are compatible for you will say they are for your Bafang midrive motor and they will have round plugs. Canbus plugs are different colors and come in triangular and rectangular shapes and fit the newer Canbus models. You cannot retrofit to a different protocol . Aliexpress, Amazon and Ebay will have them available, just make sure they specify your exact motor.