Installed my new F90BT yesterday. I used the hardware bypass that's described and pictured in this post. Grounded both the Mute and Parking Brake wire. Works like a champ.
Wanted to take a moment to say
THANK YOU !!
to the owners and moderators of this board along with all the members posting great information.
Now I'm going to read, read, search, and read some more.
Hopefully I can contribute some day and give back to the AVIV411 community.