have a question about 12 & 14 volt wiring (HELP!)

[bassisgood1]

hey everyone, new to the forums... i just had a question to ask about how to put ur amp on 14 volts instead of 12. It seems like if your car battery was running at 14 volts then all your lights (interior and exterior) would be super bright and would blow fuses left and right, so i was thinking to have only the extra batteries on 14 volts but then it seems like you wouldnt be able to connect a 12V battery to a 14V battery... any help clearing things up for me?

[Wicks]

^{A completely seperate 14V charging system (Alt and batteries) that isn't connected to your normal car functions.}

^{Or a step down module / isolator from your alt that changes 14V to 12V for the car.}