I just wanted to say thanks.
I'm about to replace a stock 2009 Forester navigation head unit with a Kenwood DNX6190HD. The pinouts and data here will hopefully make it relatively straightforward.
Although it did lead me to spend $80 on the Subaru trim piece rather than $10 on an ugly plastic filler ring to block the extra inch of width in the dash opening to allow for the stock unit, so I guess it's not all good
