Reply to thread

Message: <blockquote data-quote="KaeZoo" data-source="post: 1869667" data-attributes="member: 554753"><p>Lots of newer GMs don't have a true accessory power wire behind the head unit; they use the vehicle data bus to tell the factory radio when to turn on and off.  If yours is like this, you'll need to run a new wire to a source of accessory power.  I like to use the brown wire leading to the ignition switch if it's easily accessable.</p></blockquote><p></p>

Top