2003 monte carlo stereo

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=28542
Printed Date: April 03, 2026 at 2:10 PM

Topic: 2003 monte carlo stereo

Posted By: tee17
Subject: 2003 monte carlo stereo
Date Posted: March 17, 2004 at 7:45 AM

i am about to replace the head unit in my monte carlo. i am also going to add an amp and some subs. do i need to bypass the factory amp or can i just leave that amp to control my highs. in case i sound confusing i am putting the aftermarket amp on the subs. but i have been hearing things about the factory amp and aftermarket radios really not sounding good together. also should the pink wire in the ignition harness read 12v when the car is in acc and when it is running.

Replies:

Posted By: Metra Tech
Date Posted: March 17, 2004 at 9:59 AM

This is one of those vehicles that can be so confusing unlesss you understand how it works. Keep it simple and use the amps with this harness, Metra part# GMOS-03. This harness will let you use the amps safely and give you a delayed accessory wire like the factory radio has. It will sound nice this way with the sub installed.

Check out this link to a prior thread to understand your vehicle a little better.

https://www.the12volt.com/installbay/forum_posts.asp?tid=26426&PN=4

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