DIY - Subwoofer connection

tico1028 · 12-07-2011, 08:48 PM

Hi guys, I'm looking into adding just a single subwoofer + amp into my trunk. I have the amp already connected to the box housing the sub. I was wondering if there was a DIY available for wiring the amp to the stock radio. I have a 2011 E92 M3, but I do not have the premium entertainment/sound package.

I've tried doing some searches, but what I find is mainly for systems that have the premium entertainment package or for people simply replacing the existing subs or door speakers.

Any help would be greatly appreciated.

Thanks.

tico1028 · 12-11-2011, 09:02 AM

Any thoughts?

kmarei · 12-11-2011, 10:46 AM

You need a special harness sold by forum member Technic
You plug it into the amp
And the plug that was In the amp, plugs on the other end
That gives you RCA out that you can plug into the amp for the sub
And keeps all the speakers powered by the amp

tico1028 · 12-11-2011, 06:25 PM

Ok. So a couple things:

1) With Technic's harness, all I need to do is connect the amp on the sub to the amp on the car?

2) Where would be the best place to put a ground wire in the trunk?

Technic · 12-11-2011, 06:58 PM

I may have soon a PnP harness that retains the HiFi amp when adding a trunk sub/amp to the OEM audio system. PM for details.

tico1028 · 12-11-2011, 07:55 PM

Technic: PM'd.

If anyone has any thoughts on ground wires, I'd be very grateful

NazNaz · 01-04-2012, 06:38 PM

Quote:

Originally Posted by Technic

I may have soon a PnP harness that retains the HiFi amp when adding a trunk sub/amp to the OEM audio system. PM for details.

Can you pleaase email me the details
i would like to purchase one for my E90 320i 2006

Naz_Naufal@hotmail.com

THE TECH · 01-04-2012, 08:22 PM

Technic is the man!

jamze132 · 02-28-2012, 11:55 AM

Quote:

Originally Posted by kmarei

You need a special harness sold by forum member Technic
You plug it into the amp
And the plug that was In the amp, plugs on the other end
That gives you RCA out that you can plug into the amp for the sub
And keeps all the speakers powered by the amp

You do not need a special harness or anything. I tied right into the factory amp with speaker wire taps. I can't find the wiring diagram we used but it's floating around the internet. We tied the speaker wires into a line level converter and poof, you have an amp + sub tied into your factory system. Took 2+ hours and a 6-pack of beer.

THE TECH · 02-28-2012, 12:11 PM

Quote:

Originally Posted by jamze132

You do not need a special harness or anything. I tied right into the factory amp with speaker wire taps. I can't find the wiring diagram we used but it's floating around the internet. We tied the speaker wires into a line level converter and poof, you have an amp + sub tied into your factory system. Took 2+ hours and a 6-pack of beer.

Even if that works, I would still use Technic's harness. Much cleaner and nicer and only takes 5 mins to install.

kmarei · 02-28-2012, 09:02 PM

Quote:

Originally Posted by jamze132

You do not need a special harness or anything. I tied right into the factory amp with speaker wire taps. I can't find the wiring diagram we used but it's floating around the internet. We tied the speaker wires into a line level converter and poof, you have an amp + sub tied into your factory system. Took 2+ hours and a 6-pack of beer.

Well yes you don't NEED the harness
But if you want to keep everything stock as is
Stripping wire (which happens when you use wire taps) is not really kosher

I did that on my old car, but that was before Technic made it this easy to keep it looking clean

zhf0rd · 02-29-2012, 04:29 PM

What color wires did you tie into? How did you connect the wires to your new amp?

jc05e46m3 · 03-05-2012, 07:12 PM

Technic,

How much is your harness shipped to 23231?

jslim1999 · 03-06-2012, 07:58 PM

Quote:

Originally Posted by Technic

I may have soon a PnP harness that retains the HiFi amp when adding a trunk sub/amp to the OEM audio system. PM for details.

I'm interested in this adaptor. Could you send me details (luszcz.joshua@gmail.com). Thanks.

screamguitar47 · 05-11-2012, 10:12 AM

Technic, also interested in this adaptor. Waiting for my PM priveledges to be instated...will send you a message asap.

Technic · 05-21-2012, 10:26 AM

Please PM for details on the harnesses... I cannot post any details or pricing as I am not a forum vendor.

manari06 · 02-12-2013, 12:31 PM

Technic can you PM price shipped to 09140. Also do you have pics of the harness installed?

ZTFerrari · 02-23-2013, 11:19 AM

I can not PM yet but can you email me adapter info? 2010 e92 with indivdiual audio option...
wilson.scott@me.com

12-07-2011, 08:48 PM	#1
tico1028 First Lieutenant Drives: 2011 E92 M3 - JB Join Date: Jul 2010 Location: Miami Posts: 345 iTrader: (0)	DIY - Subwoofer connection Hi guys, I'm looking into adding just a single subwoofer + amp into my trunk. I have the amp already connected to the box housing the sub. I was wondering if there was a DIY available for wiring the amp to the stock radio. I have a 2011 E92 M3, but I do not have the premium entertainment/sound package. I've tried doing some searches, but what I find is mainly for systems that have the premium entertainment package or for people simply replacing the existing subs or door speakers. Any help would be greatly appreciated. Thanks.
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12-11-2011, 10:46 AM	#3
kmarei Major General Drives: 1988 M3 Evo II Join Date: Jul 2008 Location: Reston, VA Posts: 6,035 iTrader: (32)	You need a special harness sold by forum member Technic You plug it into the amp And the plug that was In the amp, plugs on the other end That gives you RCA out that you can plug into the amp for the sub And keeps all the speakers powered by the amp __________________ "There are two opinions in this world. Mine and the wrong one." -- Jeremy Clarkson

12-11-2011, 06:58 PM	#5
Technic Major General Drives: 2012 E92 M3, 2010 CC Join Date: Apr 2005 Location: Ft Lauderdale, Florida Posts: 9,806 iTrader: (13) Garage List 2004 M3 [0.00]	I may have soon a PnP harness that retains the HiFi amp when adding a trunk sub/amp to the OEM audio system. PM for details. __________________ -2012 E92 M3 Jerez Black/Rust Brown, M-DCT: September ED -2008 E90 M3 Melbourne Red/Bamboo, 6MT: Gone -2007 MK5 GTI United Grey/Grey, DSG: Gone -2004 E46 M3 Carbon Black/Cinnamon, 6MT: Gone -2002 E46 330i Orient Blue/Natural Brown, 5MT: Gone

01-04-2012, 08:22 PM	#8
THE TECH BimmerPost Supporting Vendor Drives: BPMsport 2012 E92 M3 Join Date: Jun 2011 Location: Kansas Posts: 11,919 iTrader: (39)	Technic is the man! __________________ Check us out on Facebook at BPMsportLabs

05-11-2012, 10:12 AM	#15
screamguitar47 New Member Drives: 2008 M3 Join Date: May 2012 Location: Long Island, NY Posts: 23 iTrader: (0)	Technic, also interested in this adaptor. Waiting for my PM priveledges to be instated...will send you a message asap. __________________

12-11-2011, 09:02 AM	#2
tico1028 First Lieutenant Drives: 2011 E92 M3 - JB Join Date: Jul 2010 Location: Miami Posts: 345 iTrader: (0)	Any thoughts?

12-11-2011, 06:25 PM	#4
tico1028 First Lieutenant Drives: 2011 E92 M3 - JB Join Date: Jul 2010 Location: Miami Posts: 345 iTrader: (0)	Ok. So a couple things: 1) With Technic's harness, all I need to do is connect the amp on the sub to the amp on the car? 2) Where would be the best place to put a ground wire in the trunk?

12-11-2011, 07:55 PM	#6
tico1028 First Lieutenant Drives: 2011 E92 M3 - JB Join Date: Jul 2010 Location: Miami Posts: 345 iTrader: (0)	Technic: PM'd. If anyone has any thoughts on ground wires, I'd be very grateful

02-29-2012, 04:29 PM	#12
zhf0rd Registered Drives: 2007 BMW 328xi Join Date: Feb 2012 Location: Pennsylvania Posts: 4 iTrader: (0)	What color wires did you tie into? How did you connect the wires to your new amp?

03-05-2012, 07:12 PM	#13
jc05e46m3 Private Drives: 2012 M3 AW/FR ZCP Join Date: Mar 2011 Location: VA Beach Posts: 96 iTrader: (0)	Technic, How much is your harness shipped to 23231?

05-21-2012, 10:26 AM	#16
Technic Major General Drives: 2012 E92 M3, 2010 CC Join Date: Apr 2005 Location: Ft Lauderdale, Florida Posts: 9,806 iTrader: (13) Garage List 2004 M3 [0.00]	Please PM for details on the harnesses... I cannot post any details or pricing as I am not a forum vendor. __________________ -2012 E92 M3 Jerez Black/Rust Brown, M-DCT: September ED -2008 E90 M3 Melbourne Red/Bamboo, 6MT: Gone -2007 MK5 GTI United Grey/Grey, DSG: Gone -2004 E46 M3 Carbon Black/Cinnamon, 6MT: Gone -2002 E46 330i Orient Blue/Natural Brown, 5MT: Gone

02-12-2013, 12:31 PM	#17
manari06 Captain Drives: 2013 E92 M3 Mineral White Join Date: Jan 2010 Location: Illesheim, Germany Posts: 863 iTrader: (5) Garage List 2013 BMW M3 E92 [4.75] 2007 335I Coupe [5.00]	Technic can you PM price shipped to 09140. Also do you have pics of the harness installed? __________________ I Am The Strength Behind The Fight!

02-23-2013, 11:19 AM	#18
ZTFerrari New Member Drives: 2010 M3 Join Date: Feb 2013 Location: Houston Posts: 6 iTrader: (0)	I can not PM yet but can you email me adapter info? 2010 e92 with indivdiual audio option... wilson.scott@me.com

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