Rickycc

Here are the pin-outs for the three harnesses on the 2009 and 2010 harman/kardon amplifier.

 

Each of these pin orientations is viewing the pins side of the car's harness (wires pointing away from you). For the socket on the amp, you'll need to mirror the numbers horizontally (e.g., 12, 11, 10, etc.).

 

Looking at the rear of the amp, the connectors from left to right are: R315, R317 (blue), R316

 

If anyone opens up their speakers, please let me know which wire colors go to +/–, so I can update the pin-out tables with the polarities.

 

More pictures of the amp harness plugs here:

2011 OB, HK Amp Upgrade!

markc0220k posted some pictures of the harnesses here:

color code for oem amp under passenger seat, anyone?

Some more info on the h/k amp is in this thread:

HK Radio for 07/08 Owners

Article on Subaru's site:

A treat for all your senses — Subaru and Harman/Kardon Audio

[link dead, now that 2009 MY is past]

Read deck sub in Legacy:

[ATTACH]83545[/ATTACH] [ATTACH]84611[/ATTACH] [ATTACH]84612[/ATTACH]

Read cargo sub in Outback:

[ATTACH]83546[/ATTACH]

I've found matching harnesses for R316 (the 24-pin one). I may be able to find the other two also (no promises).

To your question..."If anyone opens up their speakers, please let me know which wire colors go to +/–, so I can update the pin-out tables with the polarities." I replaced the speakers and confirmed A is for Positive and B is for Negative.