I Need Information for the 2006 Camry SE

I am looking for a wiring diagram for the 2006 Toyota Camry SE stereo system.  In particular, I need to know which wires are which on the head unit wiring harness for the JBL 8 speaker system.

I am trying to install a Bazooka BTA8100 Amplified Bass Tube in this vehicle and I am having issues.  Thus far, Bazooka has been no help in setting me up with a FAST wiring harness that fits this car.  After two attempts, they said they don't make one for it.  The FAST harness is used to basically plug and play instead of splicing or tapping wires.  Now, I plan to tap the two rear speakers and run a power wire and an igintion/amp-on wire and tap them directly to the head unit wiring harness.   I need to know which wires are which and whether there is a better way to do this than tapping them directly.

Thanks in advance for your help!