Hi I've just fitted a new stereo (basic face off CD with aux/USB input) it all worked fine until I started the engine then the sound cut off within 30secs or so? The actual stereo is still on and I can charge my iPod through it etc but it's just the sound that goes. I've now noticed that even when the engine is off now it still just cuts out, anywhere from 5mins till 1hour playing. I wired it up straight to the same wires as the existing head had, it all matched so I assumed it would all work ok. If anyone can help me I would appreciate it. Thank you Steve