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Message: <blockquote data-quote="Sierra Nate" data-source="post: 8710285" data-attributes="member: 673019"><p>There is a lot of communications going through the car's CAN bus.  It's kind of like a computer network's ethernet hub in that it controls all the comms on the low level stuff...stereo, hands free controls...climate controls...etc...  The factory head unit wires are bundled into a loom.  You should have part of your new harness that plugs into that loom.  Between that harness and the CAN bus (usually just a two wire connection) you'll be interfacing with all those controls through the car's computer.  Forget all that old school thought process of finding the speaker wires and tapping in.  Here's an explanation <a href="https://canbuskits.com/what.php" target="_blank">https://canbuskits.com/what.php</a></p></blockquote><p></p>

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