Hey guys, just got my AVIC-D3, Scosche harness and Metra kit. Have a couple quick questions before I install into my 08 tC.

1) How can I hook up the 08 stock sub to the headunit so I still have some bass before I go out and grab a new sub?

2) Are the speed sensor and reverse wires in the same place as previous model years?

3) Any wiring diagrams for all 08 connectors?

Answers to any or all questions would be great. Thanks!

I also need to know the answers to these questions.

1) this will take some figuring out to do with a multimeter, or if you can find a wiring diagram for the stock sub. if possible (im sure it is with enough research) you will most likely have to mount RCA heads onto the wires that plug into your sub out on the D3.

2) im sure they are. i forgot how to find the speedsensor (but my guess is that it didnt change), but as for the reverse wire, check the one in the passenger kick panel, when you drop it to reverse it should be reading at a +12v when you check it with a multimeter, then turns off when you put it into another gear.

3) which connectors?