Are the connectors the same for the base Rear Control Unit, and the MACH Rear Control Unit? I have a 2002 Ford Taurus SES with the 4 Speaker sound system, and am trying to upgrade to the mach sound system which includes 2 sail mounted tweeters and a MACH Rear control unit so I need to know if the connectors for the wires are the same. Any help would be greatly appreciated have had a hard time figuring anything out.