My mrs kept asking me to put an AUX plug in her car. It is a honda jazz 05. Like the 07 liberty it has the AUX button on the head unit however no AUX plug unless you pay $130 at the dealer to buy it genuine and install it, like I did with my liberty.
Instead, being a tightass, I ordered a 4 pole mountable jack similar to this one
and got a few dupont connectors from ebay similar to these
I just used 4 pairs of a CAT5 cable to solder to each pin of the jack on one end and to 4 dupont connectors on the other end. Each pin was for AUX Ground, AUX Detection, AUX Left, AUX Right.
Took off the head unit and plugged the dupont connectors into the back of the deck where the AUX plug harness from Honda would usually go (if it come standard with one) then drilled a hole in a panel in an inconspicuous area and mounted the jack into that. Here is a photo of the end result
It currently has a Belkin Aircast Auto plugged into it as shown in the photo. the 12v ciggarette plug was right next to where I drilled the hole for the jack. The AUX button comes alive and plays music perfectly through the stock head unit when you plug a 3.5mm male to 3.5mm male plug in to the jack from your music player. Anyway the reason I am blabbing on about a Honda Jazz is that maybe this could work with the liberty head units? It only cost me about $8 to make the cable and Subaru want about $130 for their AUX Cable. Has anyone tried this? Do you think there are any reasons why it may not work? I already have the genuine AUX cable however I am tempted to buy another 4 pole jack and make up another cable to see if it works. I doubt it will because someone else would have figured it out, but if it does work, it may be a cheap way to have AUX input in your car if you don't already have one...