i got the 12v LED thingy which meant to install at undercarridge car like neon... i try to read thru neon thread, but i found out there's still soemthing diff like ballast, i dun think the LED nit it rite?..so dicide to open new thread...how am i going to do the wiring?...i want to have switch to be turn on or off whenever i like....and on when i open my door....can this be done?...where should i link my cable?....anyone help?...where can i buy the switch aswell?