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      09-22-2020, 07:35 PM   #66
bagekko
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Drives: Lots of BMWs
Join Date: Aug 2013
Location: RI/MA

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Garage List
2018 M4 Vert  [0.00]
2006 Z4M Roadster  [0.00]
1995 540i  [0.00]
2008 BMW M5  [0.00]
2019 i3 Rex  [0.00]
2021 X7 40i MSport  [0.00]
There's a lonely 4 pin connector underneath the steering wheel lower dash cover, looks like it may be for the brake controller. Considering I have almost every option possible, not sure what else it could be for. Not a great picture but didnt have much time to grab a good light.

Quote:
Originally Posted by jmciver View Post
There is a distinct possibility it might be pre-wired. During my research on brake controllers, I found a thread over on the G05 forum where owners found wires under the dash on the driver side for a brake controller. They then installed the BMW brake controller (just a rebranded popular brake controller brand, I forget which though), after purchasing a few OEM harness plugs. Based on the similarities between the X5 and X7, seemed logical that the X7 could also be pre-wired.

Seemed pretty straight forward, and I was ready to give it a try. But after I saw the Curt Echo model, I did not feel the need. Also, even if the wiring is behind the dash of the X7, at the time of my research, BMW did on officially support a wired brake controller retrofit for the G05/G07, at least not in the US. Of course, doing things BMW has not officially supported does not necessarily mean much if it still works...
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2008 M5 6spd, 1995 540i 6spd
2018 M4 Vert Comp, 2019 i3 120ah REX
2021 X7 40i MSport, 2006 Z4M 6spd
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