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      12-26-2019, 04:03 PM   #1
Chicane_S54
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Question NEED ASSIST: OEM trailer hitch/harness install

Hi guys,

I decided to tackle the trailer hitch module over the holidays since I had some down time. I bought these as well as other accessories:

- F15 X5, F16 X6 Rear Transport Trailer Wiring Harness 82712349500

- Control Unit For Trailer Hitch 71606889589

I had already performed research on the work, on this site and others and from what I could tell the E70 instructions for the trailer module were the ones to use.

When I dug into the details of the instructions, I could tell right away that something wasn't quite right. The harness diagram had some key differences. The E70 instructions have ONE brown ground wire while my F15 harness has THREE, also the 4 red wires have different sub-colors.

I just want to make sure that I do not mis-wire something. Does anyone have experience with this? Are there F15 specific DIY's available?

If someone could point me in the right direction I would be most appreciative. Thanks.
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      12-26-2019, 04:17 PM   #2
ComasF15
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The Hidden Hitch website has install instructions that are very detailed for module install.
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      12-26-2019, 06:41 PM   #3
gvarr03
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Here's the link for active harness installation for F15 from Stealth Hitch:

https://cdn.shopify.com/s/files/1/21...f1f32.pdf?7045
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      12-26-2019, 07:56 PM   #4
Chicane_S54
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Quote:
Originally Posted by ComasF15 View Post
The Hidden Hitch website has install instructions that are very detailed for module install.
It does not.
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      12-26-2019, 07:57 PM   #5
Chicane_S54
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Quote:
Originally Posted by gvarr03 View Post
Here's the link for active harness installation for F15 from Stealth Hitch:

https://cdn.shopify.com/s/files/1/21...f1f32.pdf?7045
Thanks guy, that is much closer to what I need. For future generations I added the following as well:

https://docplayer.net/49189486-Invis...mm-socket.html

https://www.bimmerfest.com/forums/at...0&d=1520796428

https://cdn.shopify.com/s/files/1/21...f1f32.pdf?7045

Just FYI, these are all provided for reference, but:
1. The OEM BMW instructions are a joke
2. The Stealth Hitch instructions contain numerous discrepancies
3. The InvisiHitch instructions are the Gold Standard.

Last edited by Chicane_S54; 12-27-2019 at 01:27 PM..
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      12-27-2019, 07:48 AM   #6
ComasF15
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Quote:
Originally Posted by xDrive3Five View Post
Quote:
Originally Posted by ComasF15 View Post
The Hidden Hitch website has install instructions that are very detailed for module install.
It does not.
Doh! Sorry, I did mean Stealth Hitch.
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      11-25-2021, 02:50 PM   #7
spawnywhippet
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Broken links

Quote:
Originally Posted by Chicane_S54 View Post
Thanks guy, that is much closer to what I need. For future generations I added the following as well:

https://docplayer.net/49189486-Invis...mm-socket.html

https://www.bimmerfest.com/forums/at...0&d=1520796428

https://cdn.shopify.com/s/files/1/21...f1f32.pdf?7045

Just FYI, these are all provided for reference, but:
1. The OEM BMW instructions are a joke
2. The Stealth Hitch instructions contain numerous discrepancies
3. The InvisiHitch instructions are the Gold Standard.
Hi, thanks for posting, but the shopify links are broken. Do you have a copy of those instructions to share?
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      01-17-2022, 10:28 PM   #8
jp182
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Quote:
Originally Posted by spawnywhippet View Post
Hi, thanks for posting, but the shopify links are broken. Do you have a copy of those instructions to share?
you ever find those instructions?
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      04-30-2022, 10:37 PM   #9
tlow98
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Quote:
Originally Posted by jp182 View Post
you ever find those instructions?
The invisihitch instructions are here, for anyone that ends up in this dead-end thread.

https://f15.bimmerpost.com/forums/sh....php?t=1382917
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