I'm new here but I did do at least 10 searches on TW and on google without finding this specific answer.
I have a 2006 JBL HU and want to switch it out to a 2009 JBL HU that has the "AM-SAT" button that mine doesn't. Is this just a simple switch with all wiring working and dash will be identical or are there differences I should be aware of? I did read on several threads that a non-jbl cannot go to a JBL without a bunch of work. I have the isimple unit that is supposed to work with a JBL system as long as it has the "AM-SAT" button which is why I cam considering making the change.