Print Page | Close Window

2004 Sierra stereo wiring help needed

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=47150
Printed Date: July 21, 2025 at 2:39 AM


Topic: 2004 Sierra stereo wiring help needed

Posted By: bcurr
Subject: 2004 Sierra stereo wiring help needed
Date Posted: January 07, 2005 at 5:13 PM

I have installed many systems on older vehicles but the new ones have me baffled. I cant afford the $80 wiring harness and a new head unit right now so i decided to leave the stock one in. I put in an output converter and have everything wired correctly except i'm having trouble finding a remote wire to run to the amps.



Replies:

Posted By: esmith69
Date Posted: January 07, 2005 at 7:08 PM

this probably has a class II radio in it, meaning the stock head unit actually has no +12v turn on wire.  You'll have to grab one from the ignition harness.  Unfortunately, I don't have the wiring info but if you post in the forum that's for wiring requests (or do a search of all the forums for your vehicle) someone should be able to get you the info you need.

They do make some line output converters that will generate a turn on signal whenever they sense a voltage increase on their inputs, but they cost at least 30-40 last time I checked.



-------------
Ethan
-----
"Patience, persistence, and perspiration make an unbeatable combination for success"
Donate to the12volt.com


Print Page | Close Window