<strong>Yahoo Message Number: 91768</strong>When we got ready to leave this morning our GPS disk won't read. No big deal because we don't use it for navigation anyway but we can't get the backup camera to come up either. It woks when in reverse but not going down the road or with the turn signals. Do you have to be running the DVD for navi to get cameras? What am I missing?<br/><br/>Tammy...