My local Mazda dealership has just told me that my audio amplifier has shorted out and that they will be happy to replace it with a new one for $995. A company in Florida has said that they will repair and warranty my original amplifier for a fixed $199. My question: Given that the unit under the passenger seat is probably the amplifier, how do I remove it? Is there a video somewhere (I couldn't find one) or step-by-step instructions?