question: positive battery cable

newbieone · 11-29-2008, 07:23 PM

does anyone know what this split cable from the positive battery wire is for? i noticed it hanging around when i opened up the right rear lighting/battery compartment.

should i be worried?

TIA!

BK · 11-29-2008, 08:14 PM

Connects to a switch to disconnect battery during shipping. Nothing to worry about.

http://www.e90post.com/forums/showthread.php?t=92493
http://www.e90post.com/forums/showthread.php?t=25102
http://www.e90post.com/forums/showthread.php?t=59290

ncoig · 11-30-2008, 01:21 AM

Quote:

Originally Posted by BK

Connects to a switch to disconnect battery during shipping. Nothing to worry about.

http://www.e90post.com/forums/showthread.php?t=92493
http://www.e90post.com/forums/showthread.php?t=25102
http://www.e90post.com/forums/showthread.php?t=59290

All those threads refer to the wire in the passenger rear seat... unless I missing something, this is a different wire.

-N

SoCalTech · 11-30-2008, 01:52 AM

Same wire, different location. There's a switch that they hang on the mirror from the factory. That switch has wiring running to a connector under the rear seat. That connector runs to the trunk by the battery, and that connects to the battery disconnect. When we PDI the car, we remove the switch from the cabin and the switch from the trunk, but we leave the harness from the rear seat to the battery in tact. So you're just seeing the part of the harness that isn't being used anymore.

ncoig · 11-30-2008, 02:49 AM

Quote:

Originally Posted by SoCalTech

Same wire, different location. There's a switch that they hang on the mirror from the factory. That switch has wiring running to a connector under the rear seat. That connector runs to the trunk by the battery, and that connects to the battery disconnect. When we PDI the car, we remove the switch from the cabin and the switch from the trunk, but we leave the harness from the rear seat to the battery in tact. So you're just seeing the part of the harness that isn't being used anymore.

I see.

Thanks. I recall seeing that wire on my 1st E90 prior to PDI.

-N

bishamsingh · 01-18-2009, 12:34 PM

Quote:

Originally Posted by newbieone

does anyone know what this split cable from the positive battery wire is for? i noticed it hanging around when i opened up the right rear lighting/battery compartment.

should i be worried?

TIA!

Does anyone know what the red thing on top of the battery is?

ENINTY · 01-18-2009, 12:37 PM

It is a device for disconnecting primary circuits in the car in case of an accident.

11-29-2008, 07:23 PM	#1
newbieone Enlisted Member 3 Rep 32 Posts Drives: 2008 335ic Space Gray Join Date: Oct 2007 Location: bayarea iTrader: (0)	question: positive battery cable does anyone know what this split cable from the positive battery wire is for? i noticed it hanging around when i opened up the right rear lighting/battery compartment. should i be worried? TIA! Attached Images
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11-29-2008, 08:14 PM	#2
BK Smiling politely 165 Rep 7,931 Posts Drives: 330i Join Date: Feb 2006 Location: Washington DC iTrader: (0) Garage List 2006 330i [9.00]	Connects to a switch to disconnect battery during shipping. Nothing to worry about. http://www.e90post.com/forums/showthread.php?t=92493 http://www.e90post.com/forums/showthread.php?t=25102 http://www.e90post.com/forums/showthread.php?t=59290 __________________ E90 330i Black Sapphire 6MT \| 991.1 C4 Platinum Silver 7MT
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11-30-2008, 01:52 AM	#4
SoCalTech Captain 24 Rep 648 Posts Drives: Not a BMW yet... Join Date: Oct 2008 Location: Redondo Beach, Ca iTrader: (0)	Same wire, different location. There's a switch that they hang on the mirror from the factory. That switch has wiring running to a connector under the rear seat. That connector runs to the trunk by the battery, and that connects to the battery disconnect. When we PDI the car, we remove the switch from the cabin and the switch from the trunk, but we leave the harness from the rear seat to the battery in tact. So you're just seeing the part of the harness that isn't being used anymore.
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01-18-2009, 12:37 PM	#7
ENINTY Banned 173 Rep 3,415 Posts Drives: 2006 325i Sport Join Date: Jun 2006 Location: Virginia iTrader: (0)	It is a device for disconnecting primary circuits in the car in case of an accident.
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