OS-2CTS/OS-2C-CTS
Cadillac CTS/SRX Radio Replacement
Installation Instructions
Pacific Accessory Corporation
VPW
Arbitration
Class 2
J1850
J1850
EOD
Class 2
CRC
Class 2
1 0 0 0 111 0 1111 0 0 1 0 0 11 0 11 0 0
111 0 1 0 0 0 0 11 0 11 0 111 0 0 11 0 0
1 0 0 0 111 0 1111 0 0 1 0 0 11 0 11 0 0
Pacific Accessory Corporation
J1850
Class 2
111 0 1 0 0 0 0 11 0 11 0 111 0 0 11 0 0
The OS-2CTS is a plug and play interface that allow the installation of an aftermarket radio into Cadillac CTS and
SRX vehicles. It will maintain operation of the On Star® and factory amplified audio system. On Star® audio will play
through the front speakers when active. It also retains all warning chimes and Vehicle Rear Parking Assist chimes.
• Class II circuitry will not disable vehicle data bus even if interface loses power.
• On Star® active LED and Ignition on LED.
• Provides +12v switched accessory output. No more searching for switched +12v in fuse box or kick panel.
• Mute output to either mute the aftermarket radio or to turn if off when On Star® is active.
• On Star® Volume control via factory steering wheel audio controls or click wheel .
• New radio will operate with the vehicle RAP (Retained Accessory Power) system, which is 10 minutes or until a door is opened.
Note:
1. The OS-2CTS does not retain the factory XM receiver, you will lose this option when the factory radio is replaced with an aftermarket radio.
2. You may use this interface even if the vehicle does not have On Star® but need the interface with the factory amplifier.
3. On Star® must be enabled using the On Star® button on the rear view mirror, steering wheel On Star® button will not enable On Star®.
4. On Star® volume is not adjustable on CTS-V and SRX models, volume is preset at medium level.
5. The Cadillac SRX with Factory Navigation Radios do not use the same connectors as supplied.
2003 - 2007 CTS: All Models
2004 - 2006 SRX: Vehicles WITHOUT Factory Installed Navigation Radios
Note: Due to the design of the factory amplified system, there is currently no way of fading from front to rear with an aftermarket radio. If using a SWI interface, connect the green wire on the SWI interface to the red wire from the red 20 pin connector. The SWI interface must be programmed for Version #1.
Step 1. Pre wire the RAD-18 wire harness to the aftermarket stereo wire harness. If the aftermarket stereo has a mute wire, cut the brown wire as close as
possible to pin #16 of the RAD-18 harness and connect this mute output wire to the stereo’s mute wire. The amp remote wire (blue/white) must be
connected to the stereo’s remote wire.
Step 2. Connect the black 16 pin and the red 20 pin harness to the factory radio harnesses. Connect the OS-CTS wire harness into the OS-2CTS interface.
WIRE COLOR
CIRCUIT
N/A
PURPLE
N/A
CLASS II DATA
BLACK
GROUND
N/A
N/A
N/A
N/A
ORANGE
GRAY/BLK
STEERING WHEEL CONTROL
RIGHT FRONT (-)
WHITE/BLACK
LEFT FRONT (-)
PIN NUMBER
8
16
7
15
6
14
5
13
4
12
3
11
2
10
1
9
CIRCUIT
WIRE COLOR
N/A
YELLOW
N/A
12 CONSTANT
N/A
N/A
N/A
N/A
N/A
N/A
STEERING WHEEL CONTROL
RIGHT FRONT (+)
BLUE
LEFT FRONT (+)
GRAY
WHITE
OS2-RAD
OS-CTS
WIRE COLOR
White/Black
Grey/Black
Green/Black
Purple/Black
Black
Blue
Orange
Blue/White
Red
CIRCUIT
PIN NUMBER
Left Front(-)
9
18
Right Front (-)
8
17
Left Rear (-)
7
16
Right Rear(-)
6
15
Ground
5
14
Antenna
4
13
Illumination
3
12
Amp Turn On
2
11
+12v Accessory Output
1
10
Optional: Connect Red (SWC) wire to the
Green wire of the SWI series interface.
Program version # 1
Aftermarket stereo
Cut brown wire at pin #16 and connect
it to mute input wire of radio
102.7 FM
Red wire
CIRCUIT
Not Used
Left Front (+)
Not Used
Right Front (+)
N/A
Left Rear (+)
To CM-1 (if used)
Right Rear (+)
+12v Constant
WIRE COLOR
N/A
White
N/A
Grey
N/A
Green
Orange
Purple
Yellow
16 pin
connector
(BLACK)
brown
loop wire
RAD - 18
87
86
Red wire to accessory
input of radio
87a
85
OS-CTS
20 pin
connector
(RED)
30
Testing and Verifying Operation
1. Turn ignition on. The green ignition on LED inside of the interface will turn on and the +12v accessory wire will turn on.
2. Turn on the radio and check the balance. Note: Audio will not fade as the rear outputs of aftermarket radio can not be used.
3. Pressing the On Star® button on the mirror will mute or turn off the radio and allow the audio to be heard from the speakers. The On Star® active red
LED will also turn on. When On Star® disconnects, the radio will un-mute or turn back on and the On Star® LED will turn off. On Star® audio level can be
adjusted using the volume controls on the steering wheel (Volume level is preset for CTS-V and SRX vehicles).
4. Turn off vehicle and remove key. RAP will be active and keep the radio on for 10 minutes or until a door is opened.
5. The green ignition on LED and radio will turn off when RAP turns off or door is opened.
DISCLAIMER: Under no circumstances shall the manufacturer or the distributors of the OS-2CTS parts be held liable for consequential damages
sustained in connection with the OS-2CTS. The manufacture and it’s distributors will not, nor will they authorize any representative or any other
individual to assume obligation or liability in relation to the OS-2CTS other than its replacement.
On Star® is a registered trademark of On Star® Corporation.
Bose® is a registered trademark of Bose® Corporation.
8-6-10
Pacific Accessory Corporation - Santa Ana, CA 92705
866-931-8021 • www.pac-audio.com
Page 1
Pacific Accessory Corporation
CM1
Chime Module
For the OS-2 or
OS-2BOSE Interface
+12volts
Yel - Constant +12volts
Blk - Chassis ground
Org - To OS-2 or
OS-2BOSE
CM1 Installation Instructions:
Unplug the OS2-RAD cable from the interface
prior to wiring the CM1.
CM1
General Motors Class II Chime Module
Must be used with the OS-2 or OS-2BOSE Interface
Pacific Accessory Corporation • Santa Ana, CA 92705
OS2-RAD
1. Connect the CM1’s BLACK wire to the OS2-RAD BLACK wire.
2. Connect the CM1’s YELLOW wire to the OS2-RAD YELLOW wire
9 18
3. Insert the CM1’s ORANGE wire with the MOLEX pin into
pin location #12 of the OS2-RAD (18 pin) MOLEX plug.
Do not use force! Pin will snap in with minimal effort, if inserted
correctly.
4. Plug the OS2-RAD plug back into the interface .
5. When first powered up, the CM1 will chime one time to indicate
proper power connection. All warning chimes are now retained.
12
To pin# 12
1 10
6-15-06
Pacific Accessory Corporation - 1502 S. Santa Fe Street, Santa Ana, CA 92705
[email protected] • Voice: 714-835-3022 • Fax: 714-835-3233 • www.pac-audio.com
Pacific Accessory Corporation
CM1
Chime Module
For the OS-2 or
OS-2BOSE Interface
+12volts
Yel - Constant +12volts
Blk - Chassis ground
Org - To OS-2 or
OS-2BOSE
CM1 Installation Instructions:
Unplug the OS2-RAD cable from the interface
prior to wiring the CM1.
CM1
General Motors Class II Chime Module
Must be used with the OS-2 or OS-2BOSE Interface
Pacific Accessory Corporation • Santa Ana, CA 92705
OS2-RAD
1. Connect the CM1’s BLACK wire to the OS2-RAD BLACK wire.
2. Connect the CM1’s YELLOW wire to the OS2-RAD YELLOW wire
9 18
3. Insert the CM1’s ORANGE wire with the MOLEX pin into
pin location #12 of the OS2-RAD (18 pin) MOLEX plug.
Do not use force! Pin will snap in with minimal effort, if inserted
correctly.
4. Plug the OS2-RAD plug back into the interface .
5. When first powered up, the CM1 will chime one time to indicate
proper power connection. All warning chimes are now retained.
12
To pin# 12
1 10
6-15-06
Pacific Accessory Corporation - 1502 S. Santa Fe Street, Santa Ana, CA 92705
[email protected] • Voice: 714-835-3022 • Fax: 714-835-3233 • www.pac-audio.com