My 2016 Forester came with the upper outdoor speakers being controlled by my dash radio. Seems silly with an outdoor entertainment center with TV/DVD/CD/RADIO.
So I re-wired mine off the entry step well cabinet wall switch and down to the outdoor radio. Took a while to figure it out, but its works. Now the TV, radio/cd/DVD player all play thru the upper outdoor speakers if I set the fader to front. Prior, there was nothing coming thru any speakers when the fader was moved to front.
2004 Winnebago Minnie 22e(went to a nice family Oct 3, 2015)
2016 Forester 2701DS (Aug 31, 2015)
2015 Camping 3 trips 6 nights
2016 Camping 9 trips 28 nights