I've been finding some pretty awesome head units and such in the junkyards over the last couple summers, but to my surprise, even with thorough Google searching, I'm having trouble finding diagrams to identify what each wire is on the harnesses on the back of the units. Would anyone have any suggestions or recommendations for a site or some kind of service (don't mind paying if it will contain everything I need) that could provide such info? Not looking for complicated electrical/wiring diagrams. Something more along the lines of this:
Any input would be greatly appreciated.