Wiring: 1. Speaker connection: Amplifier board has a good piece of red and black wire welding can be accessed by a 4-8 Euro 100-150W bass or full-range speaker or speakers (red pick horn + , black pick speaker - is recommended to use 4 ohm 8-12 inch 45 core 100-170 magnetic bass ). 2. Power connection A. Car has a CD player: GND then negative vehicle power: 12V 12V power supply connected to the car 's positive; REM CD player connected to the control line (so the CD player can directly control the subwoofer amplifier on and off ) B. Car no CD player: GND connected to the negative power of the car , + 12V and REM connected together in positive 12V car power ( + 12V can also be an indirect one with REM switch control amplifier switching function ) C. Directly with the battery (battery) connection: GND connect the battery negative , + 12V and 12V REM then the positive battery simultaneously
