Product name:Motorcycle Headlight O/I Control Switch,Feature:switch has the red pilot lamp,when the switch turn on,the pilot lamp will be lighting,the light goes out when turned off Mount hole diameter: 22mm/7/8″Handlebar,Suitable for 12V battery installation motorcycles,electromobile,ATV,scooter. Easy assembly,It comes with three connecting wires: brown, black and blue.Blue(positive).Brown(negative).Black(connect to the equipment,positive) Total size:45 x 58mm/1.7″ x2.2″(w*h), connecting line length: 50cm/19.6″, case material: aluminum-alloy. Package content: 1x Motorcycle Headlight Control Switch. Product description Color:Red-O/I This Motorcycle light switch will fit on all motorcycles, electromobile, ATVS, scooters and snowmobiles, fit 22mm/7/8″ handlebar, could be used on DC 12V electrical system