i say u take a look at the back he might have ignored what you told him because when i was doing mine i had issues.i was breaking my head because i had bought it used and the person before me had already done the bypass and didnt know while i was breaking my head trying to figure out why it kept muting 24/7. finally decided to switch the mute wire back to where it was and wala. because before it would drive like one day without complaining and then out of nowhere tell me i couldnt watch it while driving, and ur parking break is not connected properly, but yea i suggest you just check the conne
