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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > Where is there switched (ignition) 12v power in the trunk area of an e90?

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      08-05-2014, 11:41 PM   #1

Drives: 2008 335xi
Join Date: May 2013
Location: Boulder, CO

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Where is there switched (ignition) 12v power in the trunk area of an e90?

In my other post (http://www.e90post.com/forums/showthread.php?p=16416514) it was suggested that I post in this sub forum.

I'm working on a silly project in which I want to get switched (accessory power) in the trunk. I read this post and know how to get constant power from the rear power distribution unit, but I really need it to be switched. Is there something I can tap into near the stock amp? I have a Logic 7 system.

The power going to the SAT and CD Changer pre-wire are both constant 12v. Maybe I can run a relay from somewhere? I know that the e91 has rear trunk power that's switched, but I assume the wiring harness is completely different for the e90.

Any help or pointers would be greatly appreciated!
Appreciate 0


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