The handlebar Switch apply for grips diameter: 7/8″ inch. Suitable for 12V battery installation motorcycles,motorbike,scooter. Output circuit protection, overload, reverse polarity and multiple protection, safety to use. Connection:Black(positive).Brown(negative).Blue(connect to the equipment,positive) The item has the pilot lamp,when the switch turn on,the pilot lamp will be lighting,or the lamp will off. Package Dimensions : 4.45 x 3.7 x 3.23 inches; 10.23 Ounces Date First Available : February 26, 2019 Manufacturer : Dragonpartify LLC ASIN : B07P5Q9VF8