No wiring problems at all. As Pioneer and the manual stated, if the yellow wire was disconnected, the station presets would be gone along with a few other settings. Also had DVD/CD eject on its own, once while using it, once while listening to radio and shutting off car. Had all buttons freeze again but fixed itself after ejecting disc and reinserting. Bluetooth disconnects after a few seconds on a call. Has annoying static noise when poweringoff. Too many small issues. Would gladly work around or ignore the problems if not so consistent. Sending back Friday, 1 week old.