The left switch block is mounted on the handlebar and combines the buttons that the rider presses with the left hand: usually the lights, the turn signals and the horn.
Replace the block if the keys stick, contacts fail, the housing has melted, or the lever is broken. Before buying, check the number of wires, the connector and the handlebar mounting diameter against your model. If you have the old part, compare it with the new one by size and mounting points before installation.
