>I wouldnt recomend building your own reflector or lamp housing, you >can buy those very cheaply. Just wire up some batteries (2 for >balance ?) using crimp connectors.
I'd like to wire together :
2 Front AMBER LEDS for turn signals 3-13V
2 Rear AMBER LEDS for turn signals 3-13V
1 Brake light 3-13V
So I found the LEDs at this site
http://www.brakelite.com/ this site has the parts and I can wire them and add a switch. But how do I calculate how much AA battery is needed?