Crux SWRBM-57 Wiring Interface
Connect a new car stereo and retain the factory amp and steering wheel audio controls in select 1999-up BMW and Mercedes-Benz vehicles
Item #: 249SWRBM57
Your price: $119.99 Earn up to 120 Rewards points
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Item #: 249SWRBM57
Your price: $119.99 Earn up to 120 Rewards points
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. Check the Details tab to see if steering wheel audio controls are retained in your vehicle.
Crux's SWRBM-57 interface ensures that you can keep the steering wheel audio controls and the factory analog amplifier in your vehicle when you replace the factory 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 SWRBM-57 interface also offers the parking brake, reverse, and Vehicle Speed Sensor (V.S.S.) outputs that you'll need if you're installing a navigation receiver. Note: This adapter will not work with the digital amp used in some systems. See Details for a list of compatible car stereos.
Note: Most vehicles will require additional installation parts please identify your vehicle if you haven’t done so. You can also call an Advisor for more information.
made life super easy when removing the stock HU and installing a Kenwood!!!
Installed in a 2005 Mercedes Benz C240-Base sedan. Previously I had purchased the Axxess ASWC-1 Controller and had nothing but problems. Constant issues with the Air bag warning and random door unlocks while parked until it stopped working all together. So obviously I was not going to order another one. This unit was a much better install as the harness coupled perfectly with the factory harness. No extra splicing needed. Worked from the start and also gave me the option for illumination control.
Pros: No extra splicing needed. Connects to factory harness. Works.
Cons: Only volume and station/track controls available.
Made the radio installation in my Mercedes very easy (at least the wiring part). Everything worked perfectly the first time.
Take your time and read the radio manual, these directions and it will hook up perfect first try. At least for my C230K it did.
Crux SWRBM-57 Wiring Interface. Used in my 2007 Mercedes Benz C280. Work flawlessly to connect my stereo to my steering wheel controls. Allows me to control basic all functions of the stereo from volume to changing stations to changing songs on my iPod. Very happy, reasonable price. Easy to install.
Pros: Easy to install
I received the Crux and Pioneer double din from Crutchfield nervous to install the system myself. I Consider myself to be very handy, but I have never put in a car audio system myself. First off, the Crux had very good instructions, but I did have a couple of questions I needed to discuss with a Crutchfield technical advisor. These guys are amazing! I liked the simplicity of the advisers knowing who I was and what items I ordered because of caller ID. The Crux and the Pioneer went in without any issues
Pros: Easy to install, works as expected
Cons: I was hoping the steering wheel phone button, would work with Siri. That's my only complaint
This is the best and most cost effective method to get a new radio into my 2000 CLK and keep the steering wheel controls.
Pros: - Easy to install - Volume and skip (change preset) work fine - Fair price
Cons: - Phone answer/hang up buttons don't wok from the steering wheel controls
This product is incredible, did exactly as advertised. No fuss no hassle. I replaced my 2002 C230K stereo in a matter of minutes using this adapter. No programming necessary for my steering wheel functions to work perfectly
Pros: ease of installation, only one adapter needed as this does it all.
Cons: It didn't wiring itself up while I watched.
I was pleasantly surprised when most of my steering wheel controls worked! Not only did the volume buttons and the track changer work, but the air control (BMW 3-series) worked, too! As a matter of fact, the only button that didn't work was the phone button (which I expected since I wasn't using the built-in phone any longer).
Overall, very impressed.
Pros: Easy to use/install Lots of functionality. Volume Controls Track Changing Controls Function Changing Controls (Radio -> Aux -> CD, etc.) Air Circulation Control (BMW 3-Series)
Will only control the volume, no scan or phone functions, Your customer service rep. says it will have to replaced.
Installed in 2008 BMW 3 series. If it worked it would have been great but the 12v constant connection from the adapter goes away after roughly 2 hours, causing my stereo to reset. I read that BMW's go into a deep sleep mode after a few hours and if you want 12v constant, you have to either run a connection to the battery or tap the fuse box.
Pros: Easy to wire up.
Cons: 12v constant went away after 2 hours causing stereo to reset.
Easy snap and play for my Pioneer Deck to my C280 Mercedes.
Pros: Steering wheel control works great
Great product, easy install!
Pros: Very easy to install and works great!
Was very easy to use and set up. The unit programmed itself and i was able to control my radio volume, change tracks, and change the radio source with no issues. The phone button and voice commands do not work but i think that is because my car didn't have those features anyway. I haven't looked into it much yet. 2006 BMW 325i
Used this on a 2003 c230 and it worked without a problem. Still have radio function in the wheel, antenna works great.
Pros: Ease of use, no wire cutting on original harness
Cons: Antenna wire could be defined a little better
Wire the deck and plug it in !!! No programming and it keeps most of your steering wheel controls .
Audi Radio Replacement Interface: The CRUX SWRBM-57 is a radio replacement interface for select BMW and Mercedes vehicles. It facilitates the integration of an aftermarket radio to enable retention of factory features when replacing a factory installed radio. This interface is also pre-programmed for retention of steering wheel controls.
Compatibility: The CRUX SWRBM-57 is supported by the following BMW and Mercedes vehicles; with non-amplified or amplified factory audio systems (including Bose). Not compatible with vehicle's featuring fiber-optic digital amplifiers.
|BMW||1 Series (E81/82/87/88)||2007-2013||Quadlock|
|3 Series (E90/91/92)||2005-2012||Quadlock|
|Mercedes||A-Class (W169)||Audio 5||2004-2010||ISO|
|B-Class (W245)||Audio 5||2004-2010||ISO|
Note: Two vehicle harnesses (Quadlock or ISO) are included with the interface; you will only use one of these harnesses based on your type of vehicle. Please consult Crutchfield's Outfit My Car to see if your vehicle is compatible and what additional installation accessories will be needed.
Steering Wheel Control Retention: The CRUX SWRBM-57 also features a steering wheel control output for Pioneer, Sony, Jensen, Alpine, Clarion, Kenwood, JVC, and Blaupunkt aftermarket head units. The steering wheel control output consists of a right-angle 3.5mm connector and a light blue/yellow wire (use the connection that your aftermarket head unit is fitted with). The SWRBM-57 interface module will work with any of the listed aftermarket head units, by setting its three dip-switches (see owner's manual for appropriate setting).
Note: The steering wheel control harness features two 4-pin connectors (labeled - Pioneer/Sony and Alpine/Clarion/Kenwood/JVC). You will only plug in one of these connectors to the interface module, based on the type aftermarket head unit you are installing.
Navigation Outputs: The CRUX SWRBM-57 radio replacement interface module provides a VSS (vehicle speed sense) and a Reverse Gear output to make installing an aftermarket Navigation radio simpler and less time consuming.
Amp Turn-On: The CRUX SWRBM-57 provides an amplifier turn-on lead for your vehicle's factory analog amplifiers (if equipped). This adapter is not compatible with vehicles that feature fiber-optic, digital amplifiers.
Wiring Harness: The SWRBM-57 includes two wiring harnesses; there is a 2-connector factory harness (16-/10-pin) and a 1-connector (44-pin) factory harness. Only one will be used based on the type of factory plug behind your radio. Each harness also features a 12-pin connector that plugs into the SWRBM-57 interface module. The wiring harness also provides bare-wire leads (power/ground, speaker, illumination, turn-on, and navigation) which will need to be 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 -|
|Purple/white||VSS (vehicle speed sensor)|
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ASWC-1 - unable to get working correctly [ John Feb 08, 2016 ]
This will depend largely on your vehicle. For details on installation please contact an Advisor by phone or online chat. They will be able to pull up your vehicle and give you the details on what you will need for an installation, as well as answer your additional questions. [ Jeff Jan 10, 2014 ] Staff