09GrigioTSX

Anyone know where I can find a wiring diagram for the audio system of a 2009 TSX (without navigation)?

Doing some research on potentially installing an amplifier and subwoofer(s), need a diagram to figure out the best way to wire it.

Thanks in advance!!

MMsTSX

HELMS sells the manuals for our cars.

you should buy:

Service Manual for 2009 TSX
Electonic Troubleshooting Manual for 2009 TSX

http://www.helminc.com/helm/Result.a...60CP9S0P3ABBB5

seems the service manual is the only one currently available.
it'll have the basic info you need though for sure.
yes, that price is correct.

only4me2know

Get yourself a multi-meter and a AA battery. The multi-meter helps in determining ground, constant, and ignition power whereas the battery helps with determining speaker polarity. Batteries have a positive and negative, if the battery negative is attached (via speaker wire) to the negative post of the speaker...the cone moves out. If it is the opposite, the cone will move in. But then again, if you are only utilizing subs, you just need to identify your remote wire. The constant will come from the battery (be sure utilize a fuse about 6-8 inches from the positive battery post). The negative should be close to where the amp is installed. If you unfamiliar with installing an amp, I highly recommend having a custom shop doing this for you. It won't be much. An amp wiring kit is probably about $40 - $60 or so + 1 hour of labor. I custom installed many years ago...I have seen customers burn out their entire wiring harness.

09GrigioTSX

I was hoping to use a pre-amp signal to eliminate distortion. Whether I use a line-output converter or the high level input on my amplifier, I need to identify a left and right signal of the same speaker(s) at the amplifier.

Thank you for the information though! I have wired several cars before (amps, radios, hard wired detectors), although I do NOT consider myself an "expert" by any means.