As is the case with most OEM HUs, none of the made-for-Subaru HU models have any rear RCA jacks.
Recent Forester nav HUs are made by Fujitsu Ten. I'm guessing yours is this one:
![Electronics Vehicle Multimedia Car Technology]()
These FT nav HUs have Toyota-style sockets, with only 4 main speaker outputs (the tweeters on the dash near the A pillars are wired in parallel with the front doors' speakers). No line-level outs or sub out.
Rear of 2012 model (looks virtually identical to 2014):
![Electronics Technology Electronic device]()
More pictures of rear of 2012 STi model and its factory harnesses here (post #4 in that thread). I posted pin-outs in post #9 of that same thread.
So your only option is to use the HU's high-level (amplified) speaker outputs. The good news is that I now have a harness for that (combined "forward"/reverse harness with Toyota style power/speaker connectors). For more info, contact me via e-mail (not PM) -- see my homepage link.
The USDM 2014 Forester Touring models add a harman/kardon amplifier, which takes the 4 outputs from the FT nav and generates 8 outputs (two speakers on each rear door, one on each front door, and two dash tweeters). Some pics and more info in this thread: questions about the 2014 harman kardon 8 speaker systems
Recent Forester nav HUs are made by Fujitsu Ten. I'm guessing yours is this one:
These FT nav HUs have Toyota-style sockets, with only 4 main speaker outputs (the tweeters on the dash near the A pillars are wired in parallel with the front doors' speakers). No line-level outs or sub out.
Rear of 2012 model (looks virtually identical to 2014):
More pictures of rear of 2012 STi model and its factory harnesses here (post #4 in that thread). I posted pin-outs in post #9 of that same thread.
So your only option is to use the HU's high-level (amplified) speaker outputs. The good news is that I now have a harness for that (combined "forward"/reverse harness with Toyota style power/speaker connectors). For more info, contact me via e-mail (not PM) -- see my homepage link.
The USDM 2014 Forester Touring models add a harman/kardon amplifier, which takes the 4 outputs from the FT nav and generates 8 outputs (two speakers on each rear door, one on each front door, and two dash tweeters). Some pics and more info in this thread: questions about the 2014 harman kardon 8 speaker systems
