Bike lights using 2 x 18650 batteries 3.7 volt The blue led's should be white. Use transistors suitable for the load. To use single switch on indicator use a centre off switch. Also note that in Australia indicators on bikes must be a minimum of 240mm a part. Again note to all new comers to Everycircuit. If you click “in Chrome” or tap “in app” on a user names you will see their profile and a list of their public circuits for viewing.
