PAC GM1A-R Quick Start Manual
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Radio Replacement Interfacefor select General Motors Vehicleswith Class II Data-BusGM1A-R© 2018 AAMP Global. All rights reserved. PAC is a Power Brand of AAMP Global.PAC-audio.comPacific Accessory CorporationRev: V7Date: 072418Page 1The GM1A-R interface allows the replacement of a factory radio in select General Motors vehicles with the Class II Data-Bus.Using this interface will retain factory features such as warning chimes and the factory Bose amplifier when the original radio isremoved. The GM1A-R provides data-bus driven outputs such as retained accessory power (RAP), vehicle speed signal (VSS),illumination, reverse trigger and parking brake. The GM1A-R also provides an SWI Direct output for adding an optional PACSteering Wheel Control (SWC) retention interface (SWI-RC or SWI-CP2). Rear Seat Controls (RSC) if equipped will also beretained with the SWI interface.Module LayoutImportant NotesIntroduction and Features1. Does not retain OnStar.2. Does not provide RSE audio to aftermarket radio.3. Compatible in both Premium (Y91 / UQA) and Standard Bose systems.4. The Programming Button and Adjustment Dial on the side of the interface have multiple functions. Please see Page 2 formore details.1. Wire your aftermarket radio to the GM1A-R’s harness according to the wiringconnections chart. In vehicles without a Bose system: Cut the resistor packswrapped in heat shrink off and connect the aftermarket radio’s speaker outputsto the remaining wires according to the wiring connections chart. Vehicles witha Bose system: Wire the GM1A-R harness up as-is, with the resistor packs inthe harness.2. Plug Interface Connectors 1 and 2 into the appropriate port on the GM1A-Rinterface (using the illustrations above or the label on the bottom of the interface).3. If you are also installing an optional SWC interface with the GM1A-R, connect theSWI Direct Connector to the SWC interface. (Please refer to the SWC interfaceinstructions for configuration and programming instructions).4. Remove the factory radio and plug in the GM1A-R’s vehicle harness into thefactory vehicle harness.5. If necessary, program the SWC interface. Please see next section for moredetails.Installation StepsYellow 12v+Red Accessory Output(10 amp)Black GroundBlue / White Remote On InputOrange Not UsedOrange / White Illumination OutputPurple / White Reverse Output (+)Light Green Parking Brake Output (-)Pink Vehicle Speed SignalOutput (VSS)Purple Rear R + inputPurple / Black Rear R - inputGreen Rear L + inputGreen / Black Rear L - inputGray Front R + inputGray / Black Front R - inputWhite Front L + inputWhite / Black Front L - inputWiring ConnectionsInterface Connector 1 Interface Connector 2 Vehicle ConnectorUSB PortInterfaceConnector 2InterfaceConnector 1ProgrammingButtonLED 2LED 1Adjustment Dial |
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