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2010 2011 BMW 5 Series Forum F10 BMW 5-Series (F10) Forums General 5-Series Sedan and Wagon (F10 / F11) Forum Need help identifying wires
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      11-07-2019, 09:52 AM   #1
Gjohnson7
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Ok, I pulled this side panel off to look for a temperature sensor in my driver's side AC vent, when I noticed the disconnected wires here. Does anyone know what this should be connected too? Was something removed from this space?

I've got a 2011 535i .
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      11-07-2019, 04:49 PM   #2
reihensechser
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looks to me like a retroft-ground cable, because the screw (and method) is not original.
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      11-08-2019, 09:56 AM   #3
Qsilver7
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Ditto above...some aftermarket or left over wiring from a previous owner's install was the first thing that made me go hmmm. I can't ever recall BMW grounding anything with a screw...plus BMW normally uses a brown wire for ground and it usually runs back to some grounding point (like one of the usual ground connectors or combs).

See #2 & #4 below...these are comb connectors which can usually be shortened to the desired amount of poles...this is what you see multiple ground wires connected to around the vehicle:




{here's another example of how BMW groups a bunch of ground wires to one large connector "comb"}

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      11-08-2019, 10:11 AM   #4
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Totally agree with the above, plus the other wire looks like a butt connector.
Totally DIY .
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      11-08-2019, 10:20 AM   #5
Gjohnson7
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Thanks for the input. Yeah, the butt connector threw me off too.
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      11-08-2019, 08:38 PM   #6
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Quote:
Originally Posted by Gjohnson7 View Post
Thanks for the input. Yeah, the butt connector threw me off too.
Something removed by previous owner. Follow the +12V wire (the one with the butt connector) and see where the other end connects. If feasible remove it. De-trash your car.
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