Home Resources Forums Nationals Meets Store
08/22/14 10:39 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Welcome to the Chevy Avalanche Fan Club of North America

Become a Supporting Member

Visit the CAFCNA General Store

   Home   Help Search Login Register Bookmark  
Put your advertisement image here...

Pages: 1 [2]  All   Go Down
Author Topic: This is a Hint for all you D.I.Y ers in the stereo dept  (Read 14024 times)
0 Members and 1 Guest are viewing this topic.
Full Member
Offline Offline

Posts: 48

« Reply #25 on: 12/27/09 05:55 AM »

Hi guys- I don't know if this has already been mentioned on here but-
I just went through hell installing an after market double din nav / dvd unit in my 04 av- I wanted to share the wire harness part #'s with anyone else going through the same issue splicing an aftermarket harness to the factory harness.

The correct part number for all 2000+ GM vehicles with on-star or bose systems that require a Class II Data Bus harness is NC-GM39B

The correct part number for all 2000+ GM vehicles without on-star or bose systems that still require a Class II Data Bus harness is NC-GM39C

From what I'm told- you'll need the class II data bus for any vehicle that chimes through the speaker system rather then the radio.

If this is a redundant post then feel free to delete it.


Ability is of little account without opportunity.
Full Member
Offline Offline

Posts: 660

WWW Awards
« Reply #26 on: 10/21/10 03:00 PM »

Hell, you can use your cell phone battery to do this also, any battery will do. It's very helpful to do this especially with new systems that have started using small centralized amps to run the speakers like the Bose setups in our trucks. U can run this test behind the dash to check if they're actually hooked directly to the speakers.
Also a good way to check if the wires inside your sub box are still hooked up.


Surreal Innovations' Avalanche SS

7" Pioneer Dual Din 6disc indash
Prototype15" sub on 2800rms in midgate replacement box Nov 2010: Surreal Ra1024-18" on 6000wrms
Tweeters and 4" Midranges in A-pillars
6.5 Midbass Doors [Soon (4) 6.5"]
3way Active crossover setup

Tint: 2.5% all around w/30% windshield
26" MoZ Rims, Kumho 305|30|26

K&N 77series chrome intake
Custom dual 4" tips with flowmaster 40series
SS Bumper/badges, smoked headlight/tails, blacked grill, drl ambers,diablo programmer
Full Member
Offline Offline

Posts: 469

« Reply #27 on: 07/23/13 12:25 PM »

One note though... Be careful when using a DC battery on a source that is intended to be AC. Do not hold the battery to the speaker for a long period of time. The speaker can over heat and become a dead speaker. The smaller the voltage the less chance of burning up the speaker thus the reason for using an AA/AAA instead of a 9 volt. You are also less likely to burn up a speaker with an AA/AAA battery than a C/D because they also provide less current.

Those that I have seen use this method only do so for long enough to identify the speaker direction. I was able to burn up an OEM 6 ohm speaker in under a minute holding a 9volt battery to it...   

Another option is to use a wide frequency noise injector. I have one that I bought years ago that comes with alligator clamps and RCA plugs so you have a choice which way you want to go. Because it provides a clean low power AC signal it won't damage any speaker no matter how long you hold it in place. This is used to identify which speaker is hooked to which wire or to verify its location. It is hard to do that with a battery without a second person or damaging your speaker. Because it provides many different frequencies it should work with any speaker. You can also use it to determine if a pair of speakers are wired the same way because if you drive both speakers with it the sound should be louder if they are wired the same and quieter if they are wired opposite. It does not verify if they are RIGHT or not, just that they are the same.


2003 Cladded Black Z71
Pages: 1 [2]  All   Go Up
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2011, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.053 seconds with 19 queries.
Official SEMA Member ChevyAvalancheFanClub website are the rightful owners as indicated in the ALT TXT tags provided.  Chevrolet, Chevy, Avalanche, PRO-TEC, PASSlock, Midgate, the Chevrolet bowtie logo, Avalanche logo, and their images are registered trademarks of the General Motors Corporation and are used with kind permission as approved by Chevrolet Public Relations, Chevrolet Brand Management, and the Chevrolet Legal Department (thanks Chevrolet!).  OnStar and it's logo are the property of OnStar.  XM, XM Radio, and the XM logo are property of XM Radio.  I'm just a little guy so don't even think about suing me.  It's recommended you read the Privacy Policy and Terms of Use of this website.  The Chevrolet Avalanche Fan Club of North America is a proud member of SEMA, the Specialty Equipment Market Association.  All content appearing on this is protected under international copyright , 2002 to 2008, All Rights Reserved