Hi all,
I have a VW golf with an old Sony head unit CDX M600 and a Kenwood amp
http://tech.yahoo.com/pr/sony-cdx-m600/1990490959
I am thinking to get a new head unit probably the CDX-GT620U or CDX-GT420U. My question is do I just need to unplug the current one and plug in the new one? Need to...