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Old 09-24-2017, 09:05 PM
Join Date: Sep 2017
Location: Raleigh NC
Posts: 2
Der Pfaelzer is on a distinguished road
Question about the hitch harness

Good morning,
We just bought a 2006 X3 E83 1 1/2 weeks ago. It has 87k miles and is in great shape. It was from a dealer and it took two weeks to fix the rear wheel speed sensor and the rear axle shaft. It had to be replaced because it showed a few warning lights.
We like the X3 because it is small enough to use it as a daily driver and it is big enough to tow a boat.
Currently the car does not have a hitch, but I would like to install the following one:

Part# ES#185398 at the ECS Tuning website.

If I copy the link in here, it redirects it to some weird page, sorry about that!

I believe that thread is the right one about installing it:


It comes with the wire harness, the round connector and the adapter for the 4pin connector.
I was reading that you need to plug in the harness into the white box that comes with it and also into a connector in the back of the passenger side.
So, now to my questions:
- what is the white box for ?
- what signals/information is send between the trailer and the car ? Is it just the lights and turn signals or does the car now that a trailer is attached and it changes the way it
is adapting the xdrive and the braking ?
- I tried to take a picture of the connector that I think is the right one. Could someone verify that it is the right connector?

Thank you so much for your time and help!



Last edited by Der Pfaelzer; 09-25-2017 at 08:08 AM.
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Old 09-25-2017, 08:05 AM
Quicksilver's Avatar
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Join Date: Mar 2005
Location: NORCAL
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Uh Oh this link has nothing to do with a hitch https://www.ecstuning.com/b-genuine-...t/71600035368/
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Old 09-25-2017, 08:10 AM
Join Date: Sep 2017
Location: Raleigh NC
Posts: 2
Der Pfaelzer is on a distinguished road
Uh damn, sorry about that!
I don't know what's going on there. If I go to the ECS Tuning website and copy the URL into here, it redirects it to a weird website...
Thanks for pointing that out!
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Old 09-25-2017, 07:49 PM
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Join Date: May 2015
Location: Port Lincoln South Australia
Posts: 197
yes_its_neil is on a distinguished road
Some extra info here.



2016 X5 3.0D
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