04 Ram need radio install help

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=43464
Printed Date: July 21, 2025 at 12:48 AM

Topic: 04 Ram need radio install help

Posted By: BIG ONE
Subject: 04 Ram need radio install help
Date Posted: November 21, 2004 at 12:00 PM

I have a 2004 Dodge Ram with the Infinity sound system. I am wanting to replace the stock cd player with an aftermarket one. I have bought a wiring harness kit to avoid from cutting all the factory wires. I wired up my new cd player and pluged it in and I get no sound from the speakers. I have noticed that there is only 4 wires used for the speakers. I am assuming Dodge uses a common ground on the speakers but I am not sure on this assumption. Any help would be greatly appreciated.

Replies:

Posted By: BNLUIS
Date Posted: November 21, 2004 at 1:31 PM

For 2004 ram that uses the infinity amplifleir you will have to go to amplifier behind the glove box and Bypass it. There is no possible way to turn on the Factory amp on, since its turned by databus. That is why you dont have enough wires at the factory radio plug. Follow this link and read post you will know posted_image

https://www.carsound.com/UBB/ultimatebb.php?ubb=get_topic;f=3;t=002147#000000

posted_image

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Luis
Sound Waves
Is up to the installer to test all wires with a DMM whenever possible.

Posted By: BIG ONE
Date Posted: November 21, 2004 at 2:02 PM

Wish I was aware of this before I took my dash all apart. I bought a "kit" from ABC Wherehouse, they told me "we use these all the time". Well I see that they are full of bs. Thank you for the quick response. I will have to find an amp bypass kit then. Do you think an Eclipse cd player puts out more amps per speaker than the factory amp?

Posted By: BNLUIS
Date Posted: November 21, 2004 at 2:08 PM

fist af all there are 2 types of infinity versions in the type of trucks the u have.

"I just spoke to metra. The 2003 used the 70-6512. In 2004 there is 2 different systems. If the factory amplifierhas one harness. Then the 70-6512 will work. If the amplifier has two harnesses. The 70-6512 will not work. They are working on a new harness.
He also said if the vehicle has a subwoofer, Then the 70-6512 will not work". (Murph)

Last week I did 2 2004 for models one of them had infinity system.

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Luis
Sound Waves
Is up to the installer to test all wires with a DMM whenever possible.