hi everyone! im new to this so please bear with me im having a issue with my 90bt. i had it in my 2004 chevy and everything worked great then a few months ago the "illegal" wire hooked up to the parking break warning started showing up. then i pulled it out of my 2004 chevy and just put it in my 2007 gmc and the video playback and navigation setting wont work once you start driving! BUT it comes back on when you slow down. so i understand this has to do with a speed sensor at about 16mph? well my installer says that everything is hooked up right...ie the green ground wire and repinning the black and yellow wire....but its still dont work so if anyone could give me any ? i would really appriciate it thanks mike

One of the wires in the bypass is not making a good connection. Have someone recheck the bypass connections especially the relocated black and yellow wire, its usually the culprit. If the installer still insist its wired properly then go somewhere else. There is a problem with the wiring if you are having this problem.