lol...
you kno when i first got my car i couldn't get the head unit i put in to power up...
i brought it to an independent car audio place and they couldn't get it to power up.
then i brought it to tweeter... they said they found 3 factory amps... but couldn't get them to power up. but they got power to the head unit...
i took it to circuit city and they said my car had different amps for each speaker.... couldn't find them all.... i called toyota to talk to a tech and they said they were behind or near each speaker... so the interest of saving time and money i took the car from them and ran new wires from the newly powered up deck to each speaker. i said fuck it.
and then after all that i still couldn't hear it clearly on the freeway... so i had to get an amp for it and re-wire it all again...

good times