About the Crux SWRBM-57K Wiring Interface
You'll only be able to retain your steering wheel audio controls with a compatible car stereo made by Alpine, Blaupunkt, Clarion, Jensen, JVC, Kenwood, Pioneer, or Sony. No other brands are currently compatible.
Keep your steering wheel controls
Crux's SWRBM-57K interface ensures that you can keep the factory steering wheel controls in select 1991-2006 BMW models when installing an aftermarket radio. Connect this interface to the wires on your new stereo's wiring harness, and you've covered the power, ground, and factory speaker connections for your new stereo. The interface works with BMW models with the I/K-Line bus, and includes 17-pin and 40-pin connecting harnesses.
- connect a new stereo in select 1991-2006 BMW models
- retain your steering wheel controls with select car stereos
- warranty: 1 year
- Our 60-day money-back guarantee
- MFR # SWRBM-57K
What's in the box:
- Radio replacement interface module (for BMW)
- 17-Pin harness
- 40-Pin harness
- Steering wheel control harness
Crux SWRBM-57K Wiring Interface reviews
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More details on the Crux SWRBM-57K Wiring Interface
Radio Replacement Interface: The CRUX SWRBM-57K is a radio replacement interface for select BMW vehicles. It facilitates the integration of an aftermarket radio to enable retention of certain factory features when replacing a factory-installed radio and is pre-programmed for retention of steering wheel controls.
Vehicle Compatibility: The CRUX SWRBM-57K radio replacement interface works with the following 1990-2008 BMW vehicles using I/K-Line Bus (factory non-amplified systems only):
|5 Series (E39)||Business||1995-2000||17-Pin|
|7 Series (E38)||Business||1990-1998||17-Pin|
Steering Wheel Control Retention: The CRUX SWRBM-57K features a steering wheel control output for Pioneer, Sony, Alpine, Clarion, Kenwood, JVC, and Blaupunkt aftermarket head units. The included steering wheel cotnrol harness provides a 3.5mm connector or light blue/yellow wire for your aftermarket radio. Only one type of connector will be used based on your type of aftermarket radio. There are also dip switches on the interface module that will need to be set for your type of aftermarket radio.
Note: Please see the included instructions for which SWC harness and which dip settings to use for your brand of aftermarket head unit and type of vehicle.
Wiring Harness: The CRUX SWRBM-57K includes two wiring harnesses; a 17-pin harness and a 40-pin harness (only one harness will be used based on your BMW's model and year). Either harness will plug into the SWRBM-57L interface module and your vehicle's factory radio harness, plus contain the following bare-wire leads which will need to hardwired to your aftermarket head unit's wiring harness.
|Red||+12 Volt Accessory|
|Yellow||+12 Volt Constant|
|White||Left Front Speaker +|
|White/black||Left Front Speaker -|
|Gray||Right Front Speaker +|
|Gray/black||Right Front Speaker -|
|Green||Left Rear Speaker +|
|Green/black||Left Rear Speaker -|
|Purple||Right Rear Speaker +|
|Purple/black||Right Rear Speaker -|
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