^thanks for that. I have the sph-da100, and the preprogrammed alpine bypass unit install per the drawing on the previous page. The bypass works, however there is no sound for videos in my iphone photo app. I dont have any other video file to try at te moment. I believe I read someone else had this problem, but can't seem to find if there was a solution. When I just grounded the light green wire previously, I had sound, I can't imagine what this tr7 could do to kill the sound.