custom scooter sound system

here is a sound system i installed on my scooter (scroll down for pics).
it actually gets quite loud, you can still hear it at a good 55-60mph.
(quick guidance/inspiration from layne's bosshogg scooter)

components

tools & hardware wiring description (i think) note: my scooter's electrical system generates 150W so i have the amp turned up to about 2/3. cranking it all the way doesnt blow anything out or dim the lights but i keep it at 2/3 just in case.