PAC OS-311 Installation Instructions

Class 2
VPW J1850
Arbitration
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The OS-311 is a plug and play interface that allows replacement of a General Motors GMLAN
maintain operation of the OnStar® system. The OS-311 has on board switching and audio amplifiers which allow audio
from the OnStar® system to play through the two front factory speakers when OnStar® is active. This interface retains
all warning chimes, the audible turn signal indicators, and provides a 12v R.A.P. (Retained Accessory Power) output
circuit.
• OnStar® active LED and Ignition on LED.
• Provides +12v switched accessory output. No more searching for switched +12v in fuse box or kick panel.
• Steering wheel radio controls can be retained to control the new radio by using the SWI - X, JACK, ECL or PS.
• New radio will operate with the vehicle RAP (Retained Accessory Power) circuit. The radio stays on after the key is turned off and stays on
for approximately 10 minutes or until the drivers door is opened.
1. The OS-311 does not retain the factory XM receiver. You will lose the XM option when the factory radio is replaced with an aftermarket
radio.
2. If you are not retaining the OnStar® system, use the C2R-GM11 instead of this OS-311 interface.
3. Built in Smart Mute Circuitry will play OnStar® audio through the front speakers while muting the radio or turning the radio off if a mute
input circuit is not present
The Following General Motors Vehicles using the GMLAN 11bit Data Bus with or without a Factory Amplifier.
Pontiac: G5 (2007) Solstice (2006-2007)
Saturn: Aura (2007) Sky (2007)
Chevrolet: Cobalt (2007) HHR (2006-2007)
Step 1-
Pre wire the OS-3RAD wire harness to the aftermarket stereo wire harness.
Step 2-
After connecting the OS-3RAD and OS-LAN11 wire harness to the OS-311 main interface, connect the OS-LAN11 connector to the
factory harness.
Note:
Connect the Purple/White wire (pin 18) from the OS-3RAD to the radios mute input. If a mute input is not available, connect the
Purple/White wire (pin 18) to the Red/White wire (pin 16) of the OS-3RAD connector.
The Lt. Green wire is a SWC output. Connect this wire to a SWI - X, JACK, ECL, or PS green interface wire. The interface will need to be
programmed for version 1. Do not cut the brown loop. Use the Step by Step programming instructions included with the SWI interface.
OS-3RAD
WIRE COLOR
Purple/White
OS-LAN11
Purple/Black
Green/Black
White/Brown
White/Black
J1850
EOD
Class 2
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Wire locations and Description
WIRE COLOR CIRCUIT
Left Front(-)
White/Black
Grey/Black Right Front (-)
Left Rear (-)
Green/Black
Right Rear(-)
Purple/Black
Black Ground
N/A N/A
Orange Illumination
Amp Turn On
Blue/White
+12v Accessory Output
Red
CIRCUIT
Orange Illumination
GMLAN
Black Ground
Right Rear (-)
Left Rear (-)
OnStar Mono(-)
Grey/Black Right Front (-)
Left Front (-)
General Motors OnStar®
Interface Installation Instructions
For GMLAN 11bit Vehicles
CRC
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Notes
Supported Vehicles
Installation
PIN NUMBER
9 18 Mute Output
8 17 Left Front (+)
7 16 Mute Sense
6 15 Right Front (+)
5 14 Chime Module
Left Rear (+)
4 13
3 12 Chime Module
2 11 Right Rear (+)
+12v Constant
1 10
PIN NUMBER
8 16
7 15 +12v Constant
6 14 Amplifier Turn On
5 13 Right Rear (+)
4 12 Left Rear (+)
3 11 OnStar Mono(+)
2 10 Right Front (+)
1 9 Left Front (+)
OS-311
Class 2 J1850
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factory
CIRCUIT WIRE COLOR
Purple/White
White
Red/White
Grey
To CM - X
Green
To CM - X
Purple
Yellow
CIRCUIT WIRE COLOR
Black/White
Amp Control
Yellow
Blue/White
Purple
Green
White/Purple
Grey
White
Class 2
radio. It will