hello to everyone, i just got my appradio 2, and used this thread to set up my tr7. i didn't read all 15 pages of this forum because all the info i needed i found it in the first 4 posts.and thanks to the people making this possible. now, i just want to add some of my findings with the tr7.
-first,- you do not need a relay to make it work. you can just wire white and orange directly to the brake input on the appradio, if you are not comfortable with wiring directly, you can use 2 diodes with the cathodes connected one to orange and one to white on tr7, and both anodes to brake wire