For the basic, OEM setup. We're going to be doing a full system upgrade but need to pick up speaker level behind the radio. Anybody have any info? The plug on the radio itself looks the same as the R53, but that doesn't say much

 

I'd like to know, too!

 

Pinouts for everything are in this thread.

 

any chance you could show color codes or a pic of usable nature by those of us other than EE's please?