Our extended service and replacement plans cover electronic items purchased from any source. As long as the plans are registered within 30 days of purchase. We ship the service plan in the form of a plastic card like a credit card or phone card. The customer has 3 ways to register: a. Call a toll free number b. Via a secure website c. Complete and mail in the coupon sent with their plan All this information will be provided with the card. "Covers 12-volt electronics made for use within an automobile or boat such as amplifier, digital crossovers, AM/FM/HD radios, CD changers, DVD players, mini-disc players, mobile video monitors/players/systems, radar detectors, satellite radios, scanner/CD radios, security systems, speakers, subwoofers etc."