Abstract: A method of assisting sellers and buyers in the sale and purchase of a vehicle is provided. The method may comprise the steps of communicating a vehicle's diagnostic data (e.g., OBD codes, etc.) with a provider. The method may further comprise the step of analyzing the communicated diagnostic data. The method may also comprise the step of preparing a vehicle diagnostic report based on the communicated diagnostic data. The method may also comprise the step of uploading the prepared report to a report database retrievable by a buyer.

Abstract: A vehicular diagnostic communications system, and components thereof, are provided for an apparatus and technique for communicating vehicular diagnostic information over a cellphone network. The system includes a code reader having a vehicle diagnostic port connector for receiving vehicle diagnostic information from the vehicle diagnostic port. The code reader also has a local connectivity network circuit for communicating vehicle diagnostic information between the vehicle diagnostic port connector and a local connectivity circuit. A cellphone is arranged in communication with the local connectivity network for communicating vehicle diagnostic information between the code reader and a cellular telephone network.

Abstract: A test light tool is provided for indicating electrical potential of a test surface of a vehicle D.C, electrical circuit. The test tool comprises a tool body, first, second and third LEDs disposed within the tool body and an indicator circuit connected to the LEDs. First and second connectors are provided, each having a first end connectable to the indicator circuit, and a second end connectable to one of first and second connection surfaces of the vehicle electrical circuit. A probe is provided having a first end in electrical communication with the indicator circuit and a second end extending from the tool body, and engagable to the test surface. The indicator circuit is operative to illuminate the first LED when the connector second ends exhibit an electrical differential therebetween sufficient to power the indicator circuit. The indicator circuit is further operative to selectively illuminate one or both of the second and third LEDs when the probe tip is engaged to the second surface.