I have boat with a Pioneer supertuner III D head unit. There is also an Alpine amp as well. The problem I am having is when turn the volume up is shuts the seems to shut the power off to the head unit. I a couple of seconds it the power comes back but as soon I hear sound out of it it shuts off again. Does anyone have any ideas where to stast looking?
I have duel batteries and it also does it when the motor is running (noproblems with the alternator).