I recently purchased a rebuilt 2010 TSX tech with 6k miles on it, the car worked fine for a month and one day the sound stopped from all speakers, head unit seems to play the files. The fuse for amplifier 20A at #15 is blown, I replaced it and is blown again immediately, took to acura they quoted 126$/hr and said will take a minimum of 3 hrs just to diagnose and thinks it could be amplifier or the wiring , how do I start diagnosing the problem? does some one have a wiring diagram that I can use? where is the amplifier located? Thanks in advance

 

What do you mean "rebuilt"?

 

I suspect he means salvage. Accordingly it could be anything. If it is a flood damage salvage then it could be corrosion.

The OP needs to tell us why it was a salvage car.

 

Agreed. That might explain a lot...