As Numbered on the female DIN socket:
| Pin 1 | NC |
| Pin 2 | Line-In Right |
| Pin 3 | NC |
| Pin 4 | Line-In Left |
| Pin 5 | Signal Gnd |
| Pin 6 | CD Play (or Remote Amp In) (send 12V to this to activate amp for remote device) |
| Pin 7 | NC |
| Pin 8 | Mute (input) |
| Pin 9 | Acc Out (filtered power) |
| Pin 10 | Batt Out (filtered power) |
| Pin 11 | CD Stop (input) |
| Pin 12 | NC |
| Pin 13 | Gnd |
The story behind this pinout is a long one--suffice it to say that Panasonic SUCKS. They consistently were annoying and completely uninformative to me and my Subaru dealer in our attempts to find the pinout of this connector. In the end I ended up disassembling the whole stereo, reverse-engineering the schematics, and finally figuring out from them what each pin on the connector did. For pins 8 and 11, I'd like to thank Brian S. for his help in identifying them! Probably the logic levels to those two pins are 0-12V just as for Pin 6, but I haven't verified this.