E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Bavarian Soundwerks' Mobile Electronics Forum

Bavarian Soundwerks' Mobile Electronics Forum
Have all your A/V and electronics questions answered here. Ipods, A/V, Radar Detectors Oh My!
Sponsored by Bavarian Soundwerks

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 10-31-2012, 04:03 AM   #1
cityjohn
Registered User
 
Join Date: Nov 2007
Location: Los Angeles
Posts: 2,531
My Ride: 2001 M3
+12V switched available in trunk?

Anyone know if among all the existing wiring there can be found a switched 12-volt supply inside the trunk? In other words, I can tap into it and it will be ON whenever the ignition is on but OFF once the key is removed. Thanks for any help!
__________________
cityjohn is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 11-02-2012, 09:02 PM   #2
cityjohn
Registered User
 
Join Date: Nov 2007
Location: Los Angeles
Posts: 2,531
My Ride: 2001 M3
__________________
cityjohn is offline   Reply With Quote
Old 11-02-2012, 09:28 PM   #3
benzovs
Registered User
 
Join Date: Aug 2012
Location: Tucson
Posts: 138
My Ride: 2000 323i
The remote turn on for the amp is a 12v + switched..... HOWEVER... I'm not sure if it's ignition switched or radio switched. You would have to use a relay to bump up the current if you are powering up anything that draws more than 500ma. I'm pretty sure there is at least one more 12v switched source in the trunk, just not certain of it.
benzovs is offline   Reply With Quote
Old 11-02-2012, 09:56 PM   #4
cityjohn
Registered User
 
Join Date: Nov 2007
Location: Los Angeles
Posts: 2,531
My Ride: 2001 M3
Thanks benzovs! I will take a look at that.
__________________
cityjohn is offline   Reply With Quote
Old 06-27-2014, 08:02 AM   #5
cityjohn
Registered User
 
Join Date: Nov 2007
Location: Los Angeles
Posts: 2,531
My Ride: 2001 M3
Still hunting for this wire if anyone knows. I traced it to a "purple" wire but couldn't see that it was on-with-ignition.
__________________
cityjohn is offline   Reply With Quote
Old 06-27-2014, 08:29 AM   #6
jeffb325@NavigationSolutions
J&T Distributing
 
jeffb325@NavigationSolutions's Avatar
 
Join Date: Jun 2010
Location: Fresno, CA
Posts: 2,754
My Ride: BMW
the one mentioned above, the amp turn on wire, is white and can be tapped at the amp.
__________________
USE COUPON CODE FANATICS AT CHECKOUT TO GET A $50 FORUM DISCOUNT ON THE NEW DYNAVIN N6 UNITS!



LATEST DYNAVIN INFO: http://forum.e46fanatics.com/showthread.php?t=1044105
DYNAVIN FAQ:http://www.jandtdistributing.com/pages/faq-links
///AVIN INFO: http://forum.e46fanatics.com/showthread.php?t=1015704
TO BUY http://jandtdistributing.com
jeffb325@NavigationSolutions is offline   Reply With Quote
Old 06-27-2014, 09:56 PM   #7
cityjohn
Registered User
 
Join Date: Nov 2007
Location: Los Angeles
Posts: 2,531
My Ride: 2001 M3
^ Thank you; I will try it
__________________
cityjohn is offline   Reply With Quote
Old 06-28-2014, 08:18 AM   #8
markusmarkus
Registered User
 
Join Date: Jul 2008
Location: USA
Posts: 1,655
My Ride: 2001 330Ci
I don't believe that there's any switched 12 volt wire in the trunk. The remote turn-on is for the amp, but a) it has very low current capability, and b) it's only only when the head unit is on.

The solution is to run a switched line from the dash to the trunk. Depending on the intended current load I'd install a normally open relay. The wire from the dash, when activated, would energize the relay coil. One of the relay's contacts would go to the battery and the other contact to the load.


Sent from BimmerApp mobile app
markusmarkus is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 07:30 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use