We've been encountering a little problem with the radio our motorhome which is a 2002 Chevy Express, a while back ever we got the starter replaced some strange reason when you shut the engine off somehow the radio stays on. Although, the aftermarket radio is actually wired correctly. So apparently, we got another another to see if it's the head unit itself or the wire harness. I'm guessing it's something to do ignition related. I'll post a follow-up video, if I find out the problem.