See also:

Cell Phones Warning
WARNING: Please comply with the legal regulations concerning the use of communication equipment in vehicles in your State or Province: Use of any electrical devices such as cell phones, computers, ...

Engine Compartment Overview
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Accessory Socket
The ignition switch must be in the ACC or ON position. Only use genuine Mazda accessories or the equivalent requiring no greater than 120 W (DC 12 V, 10 A). CAUTION: To prevent accessory socke ...