GM Radio Replacement Interface for GMLAN Vehicles Without OnStarо
The GMCOL29 allows aftermarket radio installation without retention of the factory radio. The interface replicates all factory warning chimes, audible turn signal indicators and provides a data bus generated 12 volt accessory output that acts just as GM’s R.A.P. (Retained Accessory Power) system did prior to radio removal. R.A.P. keeps the radio powered after the key is off, until the driver door is opened or a 10 minute timer ends, whichever comes first. The GMCOL29 also provides a SWC (Steering Wheel Control) output wire at the interface. By using this interface, the Parking Assist System will receive a “healthy” system status and the Rear Seat Audio controls will also be available for use (if equipped).
Installation:
If the Boseо Audio system is being used, connect the GMCOL29’s RCA inputs to the aftermarket radios pre-amp output. The audio level will vary depending on the new radios pre-amp output voltage (2-4 volts is recommended). If the Boseо Audio system is not used or present, cut the RCA inputs off and connect the new radios speaker outputs to the remaining wire. If the vehicle and the interface both chime, move the chime switch to the off position. The other wire connections are as follows:
• Yellow - 12 Volt Constant Voltage
• Black - Ground
• Red - 12 Volt R.A.P Voltage (1 AMP max)
• Blue/White - Antenna turn on, Amplifier turn on, and RSE turn on (if equipped)
• Orange - Dimmer/Illumination
• Lt. Green - SWC Output Wire
Using the SWC Output wire - Connect the SWC (green) output wire to a Peripheral PESWI interface. Use the green PESWI interface wire and program the PESWI interface for version 2. Follow ONLY the interface programming instructions included with the PESWI interface. Do not cut the Brown loop. (SWC interface sold separately.
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