The harness comes with an inline fuse pre-installed. Make contact with us if you are trying to find a Supra Adapter to connect with the inventory battery harness (2023 design Sur-Ron and earlier only). The BtrPower 72V Ebike Battery delivers solid efficiency for motors starting from 1800W to 2500W. https://connerzoaky.oblogation.com/37167374/the-sur-ron-light-bee-x-for-sale-diaries