This will work for any of the following: 3000, 4000, 4500, 5000, 6000, 6006, 7000 and 9006 assuming they have a serial number starting with *M*.
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When you buy a car brand new, it usually comes with a factory-branded head unit, or one made in co-operation with a known audio manufacturer. These are usually locked by a code (some by two), thats activated upon disconnection from power source, i.e. when you remove the head unit, and unplug it, or doing the same to the cars battery, you need to enter this into the head unit after reconnecting. This, and tne next three paragraphs, are bog standard for just about any car make today, and Ford is no exception. The purpose of this application is to serve as a check list for anyone who has completely legitimate reasons for getting a replacement radio code, thus facilitating the process of going through the official channel.