it all depends on what you like, and where you want the glow to come from. i put mine under the dash cuz i figured if i put them under the seats alot of the light would be blocked by your legs when you are driving. Heres a pic of my under-dash in case it helps you guess what it will look like
[ January 19, 2002: Message edited by: pimped3point3 ]

[ January 19, 2002: Message edited by: pimped3point3 ]