You will have to make sure that the negative lead of you battery is disconnected before attempting to wire the sub and amp.
First wire the positive end of the battery to that of an amplifier after looping it through a fuse. Connect the negative end of this amp to the metallic body of the vehicle. Now wire or connect the remote wire of the amp to the blue coloured remote wire of the stereo. Connect the plug in red and white cables or preouts that run from the amp to the stereo as well. T
he amp should begin to work once the battery is connected. It is recommended that all three speakers should not be connected in this way and that separate amps be used for the sub and for the others.
First wire the positive end of the battery to that of an amplifier after looping it through a fuse. Connect the negative end of this amp to the metallic body of the vehicle. Now wire or connect the remote wire of the amp to the blue coloured remote wire of the stereo. Connect the plug in red and white cables or preouts that run from the amp to the stereo as well. T
he amp should begin to work once the battery is connected. It is recommended that all three speakers should not be connected in this way and that separate amps be used for the sub and for the others.