I have a 2012 mack granite. The wiring harness for the am/fm has a 1938 datalink com line in it. I want to put a pioneer x5600dh deck in. Will the adapter y'all have work and will this make The electrical fault light come on?
Posted on Mon 31st March 2014 5.01PM in category Test Category

If you are sure that your truck has this data link connector, this means that the radio is controlled by the computer.  It feeds the ignition power to the radio to turn it on.  Aftermarket radios will tell the computer that it needs more power to tun on and usually flag the computer, showing an error in the computer.  The work around would be to feed your new radio with its own source of ignition power and not the one the computer is doing.  Be sure to fuse the new ignition power feed. The only wire you have to deal with is the ignition wire.  The rest of the wires in the harness should be okay.  Be sure to cap the wire coming from the computer to the radio if you tap at the harness.

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