memphis mcd-1000

do the remote wire has the same voltage ,when you start the car, because its reading 14.4 volts at the amp and sometimes it blows the fuse in car.

eh??? its supposed to be 14.4. The turn on lead should have nothing to do with blowing fuses. what fuse are you talking about?

Its probably the ones in the amp.... They are probably blowing from the voltage dropping too low. Do your lights dim and your engine suffer when the hard bass hits?