Hi all! Just purchased a 9th gen civic in the last month and found this forum because I searched for parking break and reverse wiring info. I am sure it's around here somewhere!!!
Also, it is not clear to me if there is a bluetooth mic already that the ASWC-1 steering wheel control unit can take advantage of or whether I am better off using the provided mic with the deck.
For the brake wire remove the center console, etc. You will find the switch that gets activated by the e-brake. For the reverse wire right above the fuse box to the left of the steering wheel you will find a connector. It is the 3 wire from the right on the top that you need to tap into. See attached pics.