no its a device that keeps a constant flow of power to the amps without no power drop if you know what i mean it stays at 12 volts constantly no matter how high you have the music
A big capacitor. Usually 1F upwards. They're quite handy for stopping your headlights flashing to the music.
no i took em out of me car but i need most of the leads still for all me other stuff so i do have some spare
well they were in the garage and some wanted them and then he was skint so just left em as they were but they are clean now sat here cant be arsed to take more photos