So it seems that AVICSYNC has been out for a while now.  So the question is, is it safe to install on my 5100?  I have heard mixed reviews but may try it out.  I don't have a warranty on my unit so I don't want to brick it.  I only have the software switch turned on for the parking brake bypass.  I do not have the parking brake wire attached to anything.  Will this work or do I have to do something with that wire?  Anything else I need to know?  Thanks!