my car amp has been working fine for nearly a year. It cut in and out a few times , then out completely. No power to the amp at all now. No lights at all. All wires are still connected securely still. My sub amp is still working so I know the remote wire is still secure on the head unit side. all fuses checked out as well. is it just time to replace the amp? }
Get a DMM and measure things up, I guess you are talking about the speakers amp, it might have lost ground or the fuse of the power cable went bad, whatever, just rule out you have a connections problem, a few times vibration gets something loose inside the amp specially is it's mounted on the sub box.