89 mustang amp bypass mecp
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=80922
Printed Date: May 12, 2025 at 2:31 PM
Topic: 89 mustang amp bypass mecp
Posted By: jasonroberson78
Subject: 89 mustang amp bypass mecp
Date Posted: July 28, 2006 at 9:08 PM
i ma mecp certified. ok bypassed the amp underneath an 89 ford mustan 5.0. radio worked great. well after the install the car willl not start.. coincidence?? i think so..but the owner seems to believe I as the installer fried his ecu..brought me the ecu from his car showing a burn diode or resister cant remember..hmmm wires theat have an ohm reading and cont...dont have pwr.. also his fuel shutoff valve has been bypassed..and home electric wire ran through his tire well..im just having a difficult time explaining to this guy its not my fault ..please on certified or well advanced installer reply w/ your input jasonrobersonaudio@yahoo.com.. i will print these if you dont mind w/ your email blacked out for reassurance thank you
Replies:
Posted By: xtremej
Date Posted: July 29, 2006 at 1:35 PM
I would have to say that I highly doubt you fried his ecu. How exactly did you bypass his amp? Did you use a metra harness or other aftermarket harness?
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Posted By: jasonroberson78
Date Posted: July 29, 2006 at 9:50 PM
i have over 10+ yrs. install exp. mecp was just a note to keep away anyone who doesn't know what the hell they are doing ..used the pwr harness 70-1770 but like i said b4 i know fords , gm , honda, european,vw bmw..wire colors in my head thats where that ten yrs.-11 ?? hands on experience comes to play ..rt front..wh, lt grn/grn,orange..lf org,grn/bl,wh.. lr pnk,grn,grn bl/ rr pnl,bl/grn,org...ign yelloe,blk so on..you're right mecp DOES NOT make a good installer..but not an average idiot who has "done a couple of my friends installs before" im sure you all have heard that one if you,ve been in this industry for awhile..thanks for the replies..keep'em commin..goin to ford dealership talkin w/ the ase cert. mechanic this week giving him the run down but i know its not my fault just proving it to these guys is a different story..thanks again post ,em or send ,em email just replies replies..by the way..thanks for bringing up that mecp doesn't always make a great installer..no offense taken..worked from pieces of crap to a Lamborghini w/ a full fiberglass/vinyl doors amp rack in trunk redesiged dash 6mo. projest 33k just in labor
Posted By: jasonroberson78
Date Posted: July 29, 2006 at 9:52 PM
oh yeah smoke out of those wires i dont understand.. fill me in im missin somethin???
Posted By: jasonroberson78
Date Posted: July 29, 2006 at 9:58 PM
me again sorry wanting to get my bases covered b4 this work week..please email your responses and how long you have been installin..in a business..not just your friends send the email @ JASONROBERSONAUDIO@YAHOO.COM PLZZZ AND IN RETURN IF YOU EVER HAVE A MIND BLOWING PROBLEM EMAIL ME W/ YOUR QUESTION..BET I'DE BE ABLE TO HELP DONE 'EM ALL
Posted By: jasonroberson78
Date Posted: July 30, 2006 at 10:40 PM
see even a rookie like your first timer cousin can do a job with no incidents like this..i have done countless jobs like this..its not hard just some brainstorming (for the "learning stage" but he did well usually people flip out when bypassing is in need..no offense taken dude understand where you're commin from.cause you dont know me..or my experience..again thanks for the reply..actually goin to the local ford dealership to get their opiion ,but we both know who is right here just looks better to show the customer page after page in my defense..the shop where i work WE ARE RESPONSIBLE for damages momand pop shop..but keep in touch if you need any advice..and like wise
Posted By: spookiestylez
Date Posted: July 30, 2006 at 11:23 PM
nouseforaname wrote:
well, assuming the install was done correctly, i don't see any way posable to fry an ecu just buy doing a simple amp bypass in a mustang. all the shade tree work sounds like the problem. what the heck is home electrical wire in the car for? sounds like a coincidence that he wants you to pay for.
I dont know what it is w/ people and home electrical wire!!! I did a car today,91 ford ranger for a deck, had to do a reverse harness on it too.To make a long story short, the owners dad had disconnected the factory speaker wire and ran some copper strand home electrial wire from behind the radio,through the firewall, across the engine bay and into the door jams for speaker wire...lol this stuff was like 10g. All cuz the "bigger the wire the better" LOL ------------- RTFM
Posted By: Velocity Motors
Date Posted: July 31, 2006 at 9:29 AM
First off, I would really question the fact that the customer brought you a burned out ECU with the exact location of a burned out diode while at the same time, the customer would not know how to install a simple HU in an 1989 Mustang ?? Sound a bit fishy to me IMO. Secondly, the stereo system in a Ford does not pass through the ECU at all. On the OEM stereo system, there is nothing that is controlled through the ECU therefore removing the HU/bypassing the amp and installing an aftermarket HU will do nothing to the ECU. I did an install on a 1988 Mustnag last week where the customer had an existing Panasonic system in there with a poor prior installation and it still did nothing to the ECU. I truly believe that the customer is trying to get a free ride out of this from you. ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: 89mustangchick
Date Posted: July 31, 2006 at 10:06 AM
I have been installing for a business for 2 years, I own an 89' mustang 5.0 I took the factory amp out all together I have not had any problems with it. I think he's just trying to get somebody to fix his problems, without it coming out of his pocket.
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Candy
Posted By: xtremej
Date Posted: July 31, 2006 at 10:49 AM
Try to be as tackful as possible, I know it will be hard. Explain that is not possible for the this to have occured by simply installing a cd player. Tell him your sorry he's having problems with his ecu but it is not as a result of your installation. I would think that the owners of the business should stand behind your work. If they through out the o so common I'll sue ya, let em. As soon as you explain the situation to a judge or magistrate they will dismiss it. I can't emphasize enough on mainting your cool though, nothing good will result if you don't. I emphasize this because I have a temper problem which makes problems worse every time guaranteed. Good luck, we have all been there atleast once, whether your right or wrong it sucks....... -------------
Posted By: caraudio26
Date Posted: July 31, 2006 at 1:37 PM
is that you monsour? are you still selling BuFu? even if its not you it still seems super unlikely you fried an ecu doing an amp bypass. were was the factory amp?
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