I want to do some custom lights on my car... and i had some questions about lights..

I wanted to do some interior lights.. under seats, under the dash, in the trunk, ect... I was also thinking about putting a small light in the 2 cup holders... maybe make a slit in the sides and put some lights around it so they would shoot in.. (kinda like the scion xb cup holders).. anyone know a way to do that?

also.. i want to do some under car/in the grille lights.. give me some glow..

And i was wondering what i had to do to set up three switches... One for my sound system (or do i need one for that?) One for the interior lights, (neon or led?) and one for under car... i know theres a way to do it.. but can someone give me a few tips to make it easier on my self...

I was also wondering how i could hook up a strip/tube under the hood so that when i pop the hood it will light up? or should i just throw a switc somewhere?

Plus.. i saw this the otherday.. Someone had a LED Bonneville name on their car.. i was wondering if ihad to rig one up.. or if there was a place to buy one..