Modular electronic system for vehicle dashboards, interior roofs, and center consoles that includes a sleeve or frame adapted to engage with the vehicle and integrate with a housing adapted to be mated with the sleeve or frame. The sleeve or frame has an inner surface area, a first pair of power contacts arranged so as to be exposed on the inner surface area, and a power connector adapted to plug into a power supply receptacle located on the vehicle dashboard (such as a cigarette lighter receptacle). Wiring means is used for connecting the power connector to the first pair of power contacts. As a result, when the power connector is plugged into a power supply receptacle on the vehicle dashboard, electrical power from the vehicle is supplied to the pair of power contacts and electronics (such as a cell phone, audio/video entertainment device, computer, radar detector, etc.) within the housing are provided with power from the vehicle. This modular system allows a vehicle owner to install one such frame or sleeve and easily interchange housings to provide the functionality desired.