I don't know how long i've been searching for the stock wiring diagrams for the Sony Limited Edition Focus. I bought mine used and it didn't come with the box, amp and sub. (AHHHH!) So I did the one thing that I didn't want to do and spliced into the rear harness. Before I did I must of searched for weeks on the pin codes through a many focus forums, but no luck. Well I finally got my hands on one. So I figure I would share with anybody else that has the same problems. Just a little help to anyone that needs it. (Got it from Crutchfield)
Sony Xplod Sound System
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
Read numbers from pin side of vehicle connector.
FUNCTION PIN WIRE COLOR
Accessory 12 Volt 2 YW/GN
Constant 12 Volt 9 OG/BK
Chassis Ground 1 BK/GN
Remote 4 BK/BU
Dimmer 11 OG/BK
Left Front Spkr + 8 WT/BK
Left Front Spkr - 16 GY/BK
Right Front Spkr + 5 WT/RD
Right Front Spkr - 13 G Y/RD
Left Rear Spkr + 7 WT/VT
Left Rear Spkr - 15 GY/WT
Right Rear Spkr + 6 WT
Right Rear Spkr - 14 GY
FUSE VALUE FUSE LABEL FUSEBOX LOCATION
7.5 AMP F50 DRIVER'S SIDE DASH PANEL
15 AMP F31 DRIVER'S SIDE DASH PANEL
The Sony Xplod Sound System was limited to 2000-01 ZTS Sedans and included a single-disc Sony CD receiver, with wireless remote control, mounted in a custom dash kit, one 6" x 8" Sony three-way speaker in each door and a Sony 10" subwoofer and amplifier mounted in a custom enclosure in the trunk. The receiver has RCA connections to output the sub amp signal, so the subwoofer can be used if an aftermarket stereo is installed. Total system power is rated at 460W.
Since the receiver harness is not a standard harness, there is no adapter available. All connections must be spliced if an aftermarket stereo is installed.
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Subwoofer Amplifier Wiring
1 2 3 4 5 6 7
8 9 10 __ 11 12 13
Read numbers from pin side of vehicle connection.
FUNCTION PIN WIRE COLOR
Chassis Ground 1 BK
Amp Remote 4 BK/BU
Constant 12 Volt 7 RD
Left + Input (from RCA) 8 WT
Left - Input (from RCA) 9 BK
Right + Input (from RCA) 12 RD
Right - Input (from RCA) 13 BK
The sub amp is protected by a 30 AMP fuse labeled #29 that is located in the under hood fusebox. The output wires from the amp are connected directly to the terminals on the subwoofer.
I hope this helps!