Connects2 CTSHU001.2 Hummer Steering Wheel Control Interface
Version 1.05/18
Product Overview
The CTSHU001.2 is a CAN-Bus Steering Wheel Control Interface designed for select Hummer vehicles equipped with standard BOSE amplified systems. It allows for the retention of original steering wheel controls, vehicle warning chimes, and standard BOSE amplified systems. This interface is not compatible with digital BOSE systems (Y91/Z75) and does not retain OnStar functionality.
Vehicle Application:
- Hummer H2: 2003 - 2007
- Hummer H3: 2006 - 2009
Key Features:
- Retains Steering Wheel Controls
- Retains Vehicle Warning Chimes
- Retains Standard BOSE Amplified Systems
Wiring Colour Codes
| Wire Colour | Function | Wire Colour | Function |
|---|---|---|---|
| Purple | Right Rear Speaker + | Yellow | Permanent 12V |
| Purple/Black | Right Rear Speaker - | Black | Ground |
| Green | Left Rear Speaker + | Red | Ignition 12V |
| Green/Black | Left Rear Speaker - | Orange | Illumination |
| Grey | Right Front Speaker + | ||
| Grey/Black | Right Front Speaker - | ||
| White | Left Front Speaker + | ||
| White/Black | Left Front Speaker - |
Prior to Installation
Important: Read this manual thoroughly before commencing installation. Technical knowledge is required. Ensure the installation location is free from moisture and heat sources. Use the correct tools to prevent damage to the vehicle or product. Connects2 cannot be held responsible for improper installation.
Fitting Guide
- Remove and disconnect the original head unit.
- Connect the 12-way molex connector of the head unit patch lead (supplied separately) to the interface (Connection A, Fig. 1). Do not connect the 14-way molex connector (Connection B) at this stage.
- Connect the opposite end of the head unit patch lead to the head unit steering wheel control input on the back of the aftermarket head unit. This may be a 3.5mm jack plug or a wire input, depending on the head unit brand. Refer to the head unit installation manual for details. Failure to complete this step before connecting power may result in no steering wheel control function.
- Connect the 14-way molex connector to the interface (Connection B, Fig. 1).
- Connect the male power/speaker ISO harness to the female power/speaker ISO harness from the aftermarket head unit. For aftermarket head units without an ISO connector, refer to "Wiring Colour Codes" on Page 2.
- Connect the female vehicle-specific connectors on the harness to the male vehicle connectors from the vehicle. Test the head unit for correct operation.
Figure 1: Shows the interface with connections A and B.
Figure 2: Illustrates connecting the head unit patch lead to the aftermarket head unit.
Figure 3: Depicts the male and female ISO harnesses.
Steering Wheel Control Functionality
The following functions are typically mapped to the steering wheel controls:
| Button Number | Function |
|---|---|
| 1 | Mute/Voice Activation |
| 2 | Preset/Band |
| 3 | Source |
| 4 | Source |
| 5 | Track + |
| 6 | Volume + |
| 7 | Volume - |
| 8 | Track - |
Figure 4: Diagram illustrating the steering wheel control buttons and their corresponding functions.
Technical Support
For assistance with any issues encountered during installation, please contact Connects2 Ltd. technical support by filling out a ticket at support.connects2.com. Provide as much detail as possible regarding the problem.
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