User Manual for CRUX models including: SWRBM-57K Radio Replacement with SWC Retention, Radio Replacement with SWC Retention, SWC Retention

249BM57K

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Crux SWRBM-57K Wiring Interface owner's manual

Crux SWRBM-57K Wiring Interface Connect a new car stereo and retain the steering wheel audio controls in select 1991-2006 BMW vehicles at Crutchfield

Crux SWRBM-57K Wiring Interface for select 1991-2006 vehicles ...


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swrbm57k
INTERFACING SOLUTIONS

R
RADIO REPLACEMENT

SWRBM-57K
Radio Replacement with SWC Retention for Select BMW Vehicles with I/K-Line Bus (1991-2006)

PRODUCT FEATURES:
- Retains factory features in select BMW vehicles with I/K-Line Bus while functioning with an aftermarket radio.
- Does not support amplified systems with factory DSP. - EIA color coded wiring for easy installation.
PARTS INCLUDED:

SWRBM-57K MODULE

SWC Cable

40-Pin Quadlock Harness INSTALLATION DIAGRAM:

17-Pin Slide-Lock Harness

Illumination (+) Power Antenna/Amp Turn on
+12V Constant +12V ACC Ground
Right Front (+) Right Front (-) Left Front (+)
Left Front (-) Right Rear (+) Right Rear (-)
Left Rear (+) Left Rear (-)

Orange Blue
Yellow Red
Black Gray Gray/Black White White/Black Violet Violet/Black Green Green/Black

AFTERMARKET RADIO

12-Pin Connector

SWRBM-57K MODULE

ON RADIO VEHICLE 1 2 3 4 5 6 7 8

40-pin Quadlock

TO FACTORY HARNESS

OR

17-pin Slide-Lock

Use the proper BM-57K harness that corresponds to the OEM harness in the vehicle

AFTERMARKET

BMW

RADIO SELECTOR SWC SETTING

(See Chart) (OFF OFF OFF OFF)

ON RADIO VEHICLE

1 2 3 4 5 6 7 8
3.5MM SWC CABLE
Plug in the 3.5MM SWC cable to the 4-pin port on the module. See "DIP SWITCH SETTINGS" section.
Cap or insulate if not being used

Kenwood/JVC (BLUE / YELLOW)

Insulate with tape if not being used

1 of 2
Crux Interfacing Solutions · 21541 Nordhoff St., Unit C, Chatsworth, CA 91311 phone: (818) 609-9299 · fax: (818) 996-8188 · www.cruxinterfacing.com

rev.042020

INTERFACING SOLUTIONS

R
RADIO REPLACEMENT

SWRBM-57K
Radio Replacement with SWC Retention for Select BMW Vehicles with I/K-Line Bus (1991-2006)

DIP SWITCH SETTINGS:

AFTERMARKET RADIO DIP SWITCH SETTINGS:

RADIO BRAND:

DIP:

1

2

3

4

Atoto, Dual, Farenheit, Jensen, Pioneer OFF OFF ON ON

Power Acoustik, Soundstream

OFF OFF ON ON

Blaupunkt, Most off-brand Radios

OFF OFF ON ON

Alpine

OFF OFF OFF OFF

Clarion

OFF ON ON OFF

Kenwood

OFF ON ON ON

JVC

OFF ON OFF ON

Boss, Old Sony

OFF ON OFF OFF

New Sony

OFF OFF ON OFF

SWC MODULE ON RADIO VEHICLE
1 2 3 4 5 6 7 8

NOTE: For Atoto, Blaupunkt, Dual, Farenheit, Power Acoustik, Soundstream, and most off-brand radios, check the aftermarket radio's manual to see if the SWC buttons need to be programmed.

BMW STEERING WHEEL CONTROL DIP SWITCH SETTING:

DIP: 5

6

7

8

SWRBM-57K MODULE RADIO VEHICLE

BMW

OFF OFF OFF OFF

1 2 3 4 5 6 7 8

3.5MM SWC CABLE Plug in the 3.5MM to 4-Pin SWC cable to the SWC module.
NOTE: Insulate the Blue/Yellow wire or 3.5mm plug if not being used.

For aftermarket radios that have wires for SWC connections, cut off the 3.5mm plug on the Crux SWC Cable (option B) and connect the SWC wires as follows:

Note that there are some radios that only have SWC1 and SWC2, in this case "shield" does not need to be connected.

RED to SWC Key 1 WHITE to SWC Key 2 SHIELD to SWC Ground

VEHICLE APPLICATIONS:

BMW

TYPE A: 17-PIN SLIDE-LOCK CONNECTOR APPLICATIONS (I-Bus Slide-Lock 17 Pin Round Connector)

1990 ­ 1998 1998 ­ 2005 1998 ­ 2006 1995 ­ 2000 1990 ­ 1998 2004 ­ 2006

3 Series (E36) 3 Series (E46) Sedan/Wagon 3 Series (E46) Coupe/Convertible 5 Series (E39) 7 Series (E38) X3

2000 ­ 2001 X5 1996 ­ 2002 Z3 2001 ­ 2002 Z8 1999 ­ 2002 M
1999 ­ 2002 M

TYPE B: 40-PIN QUAD-LOCK CONNECTOR APPLICATIONS (I-Bus QuadLock 40 Pin Connector)

2001 ­ 2004 Compact (E46) 2001 ­ 2003 5 Series (E39) 1994 ­ 2001 7 Series (E38)

2004 ­ 2007 X3 2002 ­ 2006 X5 2003 ­ 2008 Z4 2001 ­ 2005 Mini

2 of 2
Crux Interfacing Solutions · 21541 Nordhoff St., Unit C, Chatsworth, CA 91311 phone: (818) 609-9299 · fax: (818) 996-8188 · www.cruxinterfacing.com

rev.042020



References

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