The harness includes an inline fuse pre-put in. Speak to us in the event you are looking for a Supra Adapter to connect to the stock battery harness (2023 design Sur-Ron and before only). The BtrPower 72V Ebike Battery provides potent efficiency for motors ranging from 1800W to 2500W. https://travisuazbc.blogrenanda.com/44999307/everything-about-sur-ron-e-bike