... direction.2, insert the 12V cigarette lighter plug in the car cigarette lighter.3, switch to the "ON" ... to switch to the "OFF" position.4, in a counterclockwise direction will air pump nozzle, loosen, ... experiencing inflation will be stopped, this because your car's cigarette lighter power is insufficient, please directly ... cannot be used in large trucks; 2)when you use it you should start car's motor 3) ...