12v pcp air compressor with power supplyConnect 110v power supply to the compressor,the power supply is ready to useConnect high pressure hose to fill outletConnect high pressure hose to air gunsFasten release adaptor,make sure the release screw is fasten tight enough,otherwise it will leakl Connect 110v power supply to household plugTurn on fan switch,then turn on compressor switch,start fillingCheck the pressure via pressure gauge,when it reaches to your desired pressure,turn off compressor switchLoosen release screw,when the pressure gauge indicate 0,disconnect the high pressure hose with airgunsTurn off fan switch after minutes later,pull 110v plug12v pcp compessor powered by 12v car battery12v cable connectionConnect the compressor to car battery,Red wire connected to red terminal(Positive),blue wire connected to black terminal(Negative)Connect high pressure hose to fill outletConnect high pressure hose to air gunsFasten release screw,make sure the release screw is fasten tight enough,otherwire it will leakConnect 110v power supply to household plugTurn on fan switch,then turn on compressor switch,start fillingCheck the pressure via pressure gauge,when it reaches to your desired pressure,turn off compressor switchLoosen release screw,when the pressure gauge indicate 0,disconnect the high pressure hose with airgunsTurn off fan switch after minutes later,disconnect the compressor from car battery