All your amps and the capacitor should turn off when the car is off. The is a 'remote turn on' cable on each amp/capacitor, usually between the power and ground cables, this should be hooked up to a accessory wire or the accessory cable on the back of the H/U if using an aftermarket H/U. This wire tells the amps and the capacitor to turn on.
-Democracy must be something more than two wolves and a sheep voting on what to have for dinner.
James Bovard, Civil Libertarian (1994)
-Giving money and power to government is like giving whiskey and car keys to teenage boys.
P.J. O'Rourke, Civil Libertarian
-Government's view of the economy could be summed up in a few short Phrases: If it moves, tax it. If it keeps moving, regulate it. And if it stops moving, subsidize it.
Ronald Reagan (1986)