Take it up a notch with the ViAir "H" model 12v electric air compressors. Manufactured to fill tires by the use of a properly configured air line/open-end air chuck combo the H series compressor kits are great for any traveling situation at any time of the year. Unlike the C models, H-models (the 400H and 450H) compressors DO include an onboard on/off switch complete with the vital steel braided leader hose and quick connect stud.
Please use the properly distanced gauge wiring and fusing when connecting to the intended power source for maximum safety inside and out of your vehicle