... install, fashionable design. 3.Impossible to decoder, stable protection Hot-Sales Special Invisible USB Car AlarmHow to use:1, Pls ... .1, Find the positive wire of the car fuel pump, cut it off.2, Connect the 2 original wires ... to the two ends of the cutted positive fuel pump wire.3, Connect the black wire to the car ... 20kg/setPackage size: 25.5*11.0*4.2cmPacage: Hot-Sales Special Invisible USB Car Alarm