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2002 and Up Ford Focus Mach 500 Audio

Printed From: the12volt.com
Forum Name: Vehicle Wiring Information & File Requests
Forum Discription: Request Car Alarm, Car Stereo, Cruise Control, Remote Starter, Navigation, Mobile Video, and Other Vehicle Specific Wiring Info, Manuals, Tech Tips
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=111255
Printed Date: May 14, 2025 at 11:10 AM


Topic: 2002 and Up Ford Focus Mach 500 Audio

Posted By: icearrow6
Subject: 2002 and Up Ford Focus Mach 500 Audio
Date Posted: February 02, 2009 at 2:53 PM

I recently had installed an aftermarket radio on this 02 Focus with factory mach 500 audio system. Thought I'd share my findings:
The standard wiring harness kit for after market radios works. (I mean it can be purchased at any audio store FWH-594). However, the Mach 500 audio system (similar to the shaker500 found on mustangs) is equipped with a 12" subwoofer and two amps pwering the woofer. This is the third harness found on the back of the factory headunit. I managed to make it work by using the RCA Sub out of the aftermarket stereo in mono. Here is the the wires used.

WHITE/ RED stripe     Factory amp turn on.
WHITE/ BLACK stripe   (+) Low Input.
Grey/ Black stripe    (-) Low Input.

I couldn't find any info on this system so I'd thought I'd post my findings here.



Replies:

Posted By: darksidecelica
Date Posted: January 11, 2010 at 7:26 PM

Just had to do one of these today. Great info. Worked perfectly.  Also throwing in a 3000k resistor helps todrop the aftermarket radio's  +12v amp turn-on outout down to +5v.


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