i have a 99 gs 300 with the factory premium deck with the cd changr and i want to add more bass than the factory 10 but i cannot find the factory amp i was told by the idiots at ultimate electronics tht the amp was under the console so i took it apart and found a brain well to make a long story short i unplugged a harness and after that my airbag light comes on and flashes i tried to unhook my battery and reset my ecu mod but its still there any way to reset it with out the dealer and where is the amp at so i dont make anymore mistakes!!!!

 

do a search here before you start working on your car next time.
The search will tell you the same thing I would.
The amp is behind the glove box.