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X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

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Old 09-28-2014, 07:46 PM
reachg reachg is offline
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Location: Virginia
Join Date: Dec 2008
Posts: 58
Mein Auto: 2009 X3
2009 X3 Hitch Wiring

Hello All - I have done enough research to find a suitable hitch wiring. I am buying a camper trailer and below is what I need:

1. 7 pin plug
2. Green - Tail lights and marker lights
Red - Left Turn and Brake light
Brown - Right Turn and Brake Light
Black - Battery Charge
White - Ground
Yellow -Backup lights
Blue - Electric Brakes (I don't need these)

I have looked at the BMW after market hitch wiring but I do not have the plug in(or I cannot find it) in the right rear storage compartment. I have also looked at the following link http://www.xoutpost.com/articles/x3/body-style/16752-how-install-bmw-factory-trailer-hitch-2006-x3.html but I get stuck at step 27.

I have also looked at the etrailer wiring but that is 4 pin, and I need 7 pin with black for charging battery.

Any help/pointers are greatly appreciated.
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Old 09-30-2014, 06:11 AM
GTR-34 GTR-34 is offline
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Location: Alamogordo, NM
Join Date: Dec 2013
Posts: 16
Mein Auto: 04 X3 3.0i
where can I get a wiring with seven pins? can just find those with 4.
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