There are a few things you can do to increase the convenience and usability of auxiliary input in your car. The first is to install an auxiliary input device such as a touch screen or joystick. This will allow you to easily access all the functions of your car’s audio and navigation systems without having to fumble around with buttons and switches. Another option is to install an auxiliary input device that plugs into your car’s cigarette lighter. This will allow you to easily access all the functions of your car’s audio and navigation systems without having to fumble around with buttons and switches. Finally, you can also install an auxiliary input device that plugs into your car’s cigarette lighter jack. This will allow you to easily access all the functions of your car’s audio and navigation systems without having to fumble around with buttons and switches.