I dropped my flash light last week and the switch stopped working and since it was about time to get a new light I started hacking its guts into my scooter as a backup/emergency headlamp. I’m really happy with the results.
I wired a rocker switch on the “dashboard” of my scooter, which is wired to the scooters 12v battery and ground on one side and the voltage regulator I designed with a 7805 regulator and two 16v 220uF capacitors.
I took a couple pictures with my iPhone. The results aren’t drastic, but it would definitely help if both the orginal headlamps go out at the same time (again).
Without LEDs
With LED's
Here’s the schematic I made in Inkscape.
