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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > X Series > X3 F25 (2011 - current)

X3 F25 (2011 - current)
The latest X3 brings added style and new features to the BMW's mid-sized SUV. Talk about the BMW F25 X3 with other X3 owners now!

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  #1  
Old 08-19-2014, 02:58 PM
beberle beberle is offline
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Location: Atlanta
 
Join Date: Mar 2004
Posts: 50
Mein Auto: 323iT
2011 X3 trailer wiring harness install

Just wanted to pass along what I learned installing a Curt trailer harness kit to my 2011 X3 w/ non-HID lights.
Turns out HID and Non-HID vehicles have different tail light wiring. Only 3 wires going to each light assembly per side. Yellow for running lights AND brake lights. Blue for turn signal, and brown for ground.
I couldn't find any online help for this setup. Slight vague Curt instructions w/ the kit say to ground the red brake wire if hooking to a 2-wire system.. So that's what I did.
-1st pic shows red wire spliced into white ground wire.
-2nd pic shows brown Curt wire tapped into vehicle yellow/blk for brake and running light (dual voltage) and Curt yellow tapped to vehicle Blue for driver's turn signal.
-3rd pic shows curt Green to vehicle Blue for passenger turn signal.

I installed the Draw-Tite hitch and am impressed w/ the fit and build quality. Whole package cost $275 including hitch ball.



[IMG]http://i1107.photobucket.com/albums/h386/beberle/CFCB4257-4EAD-434D-A4CF-8A9E3F385358_1.jpg[IMG]

Last edited by beberle; 08-10-2015 at 10:20 AM.
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  #2  
Old 04-07-2015, 06:41 PM
wingless wingless is offline
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Location: FL
 
Join Date: Apr 2007
Posts: 75
Mein Auto: 2015 BMW X3 xDrive28i
Quote:
Originally Posted by beberle View Post
Just wanted to pass along what I learned installing a Curt trailer harness kit to my 2011 X3 w/ non-HID lights

Fixed image typo...

Nice job and write-up!
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  #3  
Old 04-28-2015, 05:44 PM
HikerToo HikerToo is offline
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Location: Delaware
 
Join Date: Nov 2014
Posts: 157
Mein Auto: 2011 328i XDrive
May be getting a 2012 X3 soon, if it does not come with the hitch was thinking of going with a Curt or Draw-tite hitch, maybe wiring later, I just want it for a bike rack to start.
etrailer shows the install difficulty as a 10 out of 10...
what is your opinion or any hints on the actual hitch install? Are there some that just go under vs integrated into the bumper which may be more difficult?
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2012 X3 28i
2011 328i xDrive
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  #4  
Old 04-28-2015, 06:30 PM
wingless wingless is offline
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Location: FL
 
Join Date: Apr 2007
Posts: 75
Mein Auto: 2015 BMW X3 xDrive28i
Quote:
Originally Posted by HikerToo View Post
what is your opinion or any hints on the actual hitch install? Are there some that just go under vs integrated into the bumper which may be more difficult?
This is the topic on my Invisihitch installation on my 2015 X3.

For me this was a Sunday afternoon job.

Any / all of the hitch options discard the existing bumper reinforcement, replacing it w/ the hitch, that is then covered / hidden by the bumper facia.

IMO, the Invisihitch is a great system. From a hitch perspective, it is VERY nice not having the slop / clatter from the standard 2" square receiver, replacing that w/ a tight / solid system.
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  #5  
Old 08-10-2015, 10:19 AM
beberle beberle is offline
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Location: Atlanta
 
Join Date: Mar 2004
Posts: 50
Mein Auto: 323iT
Responding to an old post, but.....
I'd say the hitch install itself is a 5/10. The back bumper comes off pretty easily. Large and flexible, so a 2nd set of hands helps.
The wiring is maybe 5/10. Together, a 4-5hour job.
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