So I am wiring up my car radio (not HAM) and I have hit a wall. I don't really want to pin out every wire in my amplifier circuit but I may have to. Here is my issue. I have found some diagrams online about the factory radio connectors. I hooked them up with my own adapter to a newer kenwood head unit. As soon as I connect ANY of the Grounds for any of the speaker channels it says "SHORT protect" Does any one know if the factory systems uses a "Common Ground" speaker wiring or has run in to this issue.
Any help would be appreciated.