ABTI-GM1 General Motors Class II Bluetooth Interface Installation Manual

The ABTI-GM1 is designed to allow full integration of Motorola’s IHF-1000 Bluetooth HandsFree kit (Sold separately) with GM Class 2 vehicles listed inside. The kit will allow users to listen to phone calls through their car stereo. The currently playing radio source will be automatically muted, and the phone volume may be controlled by the radio. OnStar operation is unaffected.
Operation
Refer to the IHF-1000 manual for operation. All audio signals from the IHF-1000 will be played through the car stereo. Adjust the volume using the radio’s volume knob to a comfortable level. Audio from FM, CD, Satellite etc. will be automatically paused or muted while calls are in process. Any OnStar operations will preempt the operation of the IHF-1000. Keep in mind that if OnStar operations start while you are on a call, the call will continue and the caller will be able to hear you – watch what you say! The vehicle’s radio does not need to be on for IHF-1000 operations, but the vehicle’s ignition must be on or in accessory mode.
INSTALLATION COMPONENTS
1) ABTI-GM1 Class 2 cable.
2) ABTI-GM1 interface to IHF-1000 power cable.
3) ABTI-GM1 interface.
4) Motorola IHF-1000 kit
5) Installation tools, wire ties, and mounting hardware
INSTALLATION PROCEDURE
1) Disconnect the vehicle battery.
2) Remove the radio from the dashboard, and disconnect any cables connected to the radio.
3) Insert the 24 pin plug on the Class 2 cable into the rear of the radio.
4) Insert the 12 pin plug on the Class 2 cable into the rear of the radio.
5) Connect the 24 pin cap on the Class 2 cable to the 24 pin plug connected to the vehicle (the connector that was removed from the back of the radio).
6) Connect the 12 pin cap on the Class 2 cable to the 12 pin plug connected to the vehicle (the connector that was removed from the back of the radio)
7) Connect the white 10-pin plug on the Class 2 cable to the ABTI-GM1 module.

source: http://www.autotoys.com/pics/9098-1.pdf