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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 03-15-2013, 08:10 PM
aleks001 aleks001 is offline
Aleks
Location: Brisbane, Australia
 
Join Date: Nov 2011
Posts: 460
Mein Auto: 2006 BMW 325i
What is this cable/wire and where to find it on realoem ?

Car: 325i N52. The wire runs from somewhere under the engine cover to the body. It looks like some sort of ground. In the picture I've taped it up with white tape temporarily. It's the green one that goes behind the wiper fluid cap.


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  #2  
Old 03-15-2013, 09:07 PM
aleks001 aleks001 is offline
Aleks
Location: Brisbane, Australia
 
Join Date: Nov 2011
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Mein Auto: 2006 BMW 325i
Is it at Interference-suppression band and what does it do lol

http://realoem.com/bmw/showparts.do?...76&hg=12&fg=30
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  #3  
Old 03-16-2013, 02:39 AM
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Zooks527 Zooks527 is online now
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Mein Auto: 2009 335i xDrive coupe
Sure looks like something to ground a section to prevent EM noise.
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Old 03-16-2013, 08:31 AM
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Verts4Ever Verts4Ever is offline
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Location: Phoenix West Valley
 
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Mein Auto: 2011 E93 335i
Like Zooks said, this is likely a bonding strap to prevent radio frequency interference.

This site has a good primer on the phenomenon.

Cheers.

Last edited by Verts4Ever; 03-16-2013 at 11:56 AM.
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Old 03-16-2013, 05:11 PM
TXFred TXFred is offline
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A bonding strap is pretty much a bonding strap. If BMW wants stupid amounts of money for it, there's no reason you cannot make your own.
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Old 03-17-2013, 05:49 AM
aleks001 aleks001 is offline
Aleks
Location: Brisbane, Australia
 
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Mein Auto: 2006 BMW 325i
Cool thanks guys I will get it online for $15. I'm willing to pay that
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Old 03-17-2013, 05:53 PM
aleks001 aleks001 is offline
Aleks
Location: Brisbane, Australia
 
Join Date: Nov 2011
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Mein Auto: 2006 BMW 325i
The one in the car is actually a copper boding strap and here is a little info about what it does:

Why use COPPER GROUND STRAP?
Because of the "skin effect", radio frequency currents tend to
conduct along the surface of a conductor rather than through
the middle. Because of this effect, COPPER STRAP is more
efficient than wire at handling high frequency currents. This
makes COPPER STRAP a logical choice in RF grounding
applications and in applications requiring bonding and
grounding for lightning protection. The rapidly pulsating DC
currents encountered during a lightning strike can be
compared to high level RF currents. COPPER STRAP
handles these currents more effectively than the same
amount of copper in wire form.
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