Product name:Motorcycle Headlight O/I Control Switch,Feature:switch has the red lamp,when the switch turn on,the 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 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