Case Material:Aluminum-alloy,The handlebar apply for grips diameter:22-23mm(7/8″ inch). Suitable for 12V battery installation motorcycles,motorbike,scooter. Connection:Black(positive).Brown(negative).Blue(connect to the equipment,positive). Output circuit protection,overload,reverse polarity and multiple protection,Safety to use. The item has the pilot lamp,when the switch turn on,the pilot lamp will be lighting,or the lamp will off. Product description Color:Silver Specification: Weight:3.3 ounces Package Dimensions:6.5×3.5×1.2inch Cable length:57.5cm long Shell Color:Black, Silver Switch material:aluminum alloy Operating voltage:12V Universal aii with a fixed motorcycle,the electric car would like to install,then 12V input is also possible. High Quality Material Excellent material:aluminium alloy,3 wires of copper material. Wiring Method Blue wire connect to battery positive pole,brown wire for the battery negative pole,blach wire for equipment cathode. Whether there