Replacing a factory radio can cause the original steering wheel audio controls to stop working. This interface translates the vehicle’s CANbus steering control commands into signals that can be recognised by a compatible aftermarket stereo.

It also provides several useful vehicle-data outputs that may be required when fitting an aftermarket multimedia receiver, navigation system or reversing camera.

• Retains compatible factory steering wheel audio controls
• Allows replacement of the original factory radio
• Communicates with the vehicle through CANbus
• Provides a speed-pulse output
• Provides a parking-brake output
• Provides a reverse-gear output
• Software updateable for supported applications
• Supports steering wheel button remapping
• Allows supported buttons to have short-press and long-press functions
• Configurable for compatible aftermarket stereo brands
• Connects to the vehicle’s factory 40-pin Quadlock plug
• Reduces the need to modify the vehicle’s original radio wiring

Vehicle compatibility depends on the original radio, dashboard wiring and factory connector. Check all compatibility requirements before ordering.

This interface is designed for compatible vehicles with a 40-pin Quadlock connector behind the original radio.

Suitable for selected vehicles originally fitted with the following factory head units:

• CD30
• CD30MP
• CDC40
• CD50
• CD70
• DVD 90

Compatible original radios may have been manufactured by Blaupunkt, Delphi or Siemens VDO.

Available functions depend on the vehicle’s original controls and the capabilities of the aftermarket stereo. Supported functions can include:

• Volume up
• Volume down
• Track or station up
• Track or station down
• Preset up
• Source selection
• Compatible phone and voice functions where supported

Actual steering wheel button layouts and retained functions vary between vehicles.

The interface provides the following vehicle-data outputs:

• Speed pulse: Can provide a vehicle-speed signal for compatible navigation and multimedia systems
• Parking brake: Can provide a parking-brake status signal where required by the aftermarket stereo
• Reverse gear: Can provide a reverse trigger for a compatible reversing-camera or multimedia installation

Always confirm the required connection and input type in the aftermarket stereo’s installation instructions.

Supported steering wheel buttons can be reassigned to different compatible stereo functions. Selected buttons may also be configured with separate short-press and long-press commands.

Available remapping options depend on the vehicle controls, interface software and aftermarket stereo being used.

The supplied head-unit connection lead supports compatible aftermarket stereos using a 3.5mm steering remote socket, SWC control wire or resistive KEY1 and KEY2 inputs.

Connection and configuration vary by stereo manufacturer. The interface dipswitches must be set correctly for the brand and model of stereo being installed.

Check that the aftermarket stereo has a steering wheel remote-control input before ordering.

The original factory radio must be removed and disconnected before installation. The interface harness then connects between the vehicle’s 40-pin Quadlock connector and the compatible aftermarket stereo wiring.

Dipswitch settings must be configured for the stereo manufacturer before power is applied. After installation, test the radio, steering wheel controls and vehicle-data outputs before refitting the dashboard trim.

Installation requires suitable technical knowledge. Professional installation is recommended where the vehicle wiring, stereo connection or interface configuration is uncertain.

• Only suitable for vehicles with the matching 40-pin Quadlock connector
• The original factory radio must match one of the listed radio types
• The aftermarket stereo must support external steering wheel controls
• Retained functions vary according to the vehicle and aftermarket stereo
• Additional aerial, fascia or USB adapters may be required
• Factory amplified systems or special audio options may require additional equipment

Check the original radio, dashboard connector and vehicle specification before ordering. Do not rely on the vehicle model and registration year alone.