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1992 Mustang GT: Installing New Stereo using existing Premium sound AMP

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Oscar Cortez

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Oct 16, 2002, 6:03:08 PM10/16/02
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I have a 1992 Mustang GT Hatchback. It has the factory premium sound
system with 6 speakers ( 2 dash, 2 doors, 2 rear). It has double DIN
tape deck/equalizer. My stereo just died and I want to replace it
along with the EQ. I've taken out the double DIN unit (stereo/eq) and
I would like to install a regular CD player with 4 speaker output. I
want to use the factory amp.

Currently the factory stereo hooks up to the factory EQ and then out
to the amp. I want to take those 2 items out and install my own CD
player.

Does anyone know what wiring kits I need or has anyone done this
installation? Any help will greatly be appreciated.

Thanks,

Oscar.

Saleen8927

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Oct 16, 2002, 7:43:44 PM10/16/02
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Just my two cents worth, but most decent aftermarket stereos (as long as you
stay away from the $99 specials) have better quality amps than the factory
premium one from Ford. You may be better off just getting rid of the factory
amp and using the stereo's speaker outs.

John Dybwad

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Oct 16, 2002, 9:17:05 PM10/16/02
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"Saleen8927" <salee...@aol.com> wrote in message
news:20021016194344...@mb-fc.aol.com...

Isn't the Ford amp only 80 watts to begin with?


JS

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Oct 16, 2002, 9:26:51 PM10/16/02
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They are relatively close... probably too close to call anyway. If you are
serious about the sound coming out of your speakers, adding an aftermarket
4-channel amp and new speakers is the way to go. You don't have to play it
loud to appreciate the sound that you'll get out of the more powerful
amplifier.

If you're going for a cheaper system, you could visit a stereo shop and ask
for the interfacing cables to attach your aftermarket to your Ford deck.

The last time I did a '93 premium sound system install, there were a
possible two different connections to the amps.... one looks like an
ethernet jack, and one is a more typical Ford connector. They only had one
type available, and the car I was working on had the other type.

Just letting you know what you may be up against....

JS

"Saleen8927" <salee...@aol.com> wrote in message
news:20021016194344...@mb-fc.aol.com...

Oscar Cortez

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Oct 17, 2002, 2:14:35 AM10/17/02
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"JS" <notavali...@nospam.com> wrote in message news:<vlor9.44050$qb.1...@nwrddc01.gnilink.net>...


OK! Let's say I do decide to take out the factory AMP. Where can I
find the wiring schematic or color codes for the speakers in the car?

I have gone to some websites and most of them point to a Scosche
FAI-3. However, there is not much more information.

I have talked to several installers in my area but they don't want to
give out their 'trade secrets'. I could always just run new wires to
the speakers, but I know that shouldn't be necessary especially if the
wiring is in place already.

Thanks for everyones help.

Oscar C.

Joe

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Oct 17, 2002, 6:43:36 AM10/17/02
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"John Dybwad" <jdy...@gra.midco.net> wrote in
news:uqs3sl8...@corp.supernews.com:

The 80 watts is an inflated figure. Real RMS power is only about 10
watts per channel, if that. THD is somewhere above 1% also. Garbage.

Joe
Calypso Green '93 5.0 LX AOD hatch with a few goodies
Silver '02 Dakota 5.9 R/T CC

Joe

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Oct 17, 2002, 6:45:10 AM10/17/02
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oz...@hotmail.com (Oscar Cortez) wrote in
news:87e56c60.02101...@posting.google.com:

Easiest thing I've found is to check Crutchfield. They have the
connectors as well as the wiring schematics. HTH.

JS

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Oct 17, 2002, 8:51:38 PM10/17/02
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"Oscar Cortez" <oz...@hotmail.com> wrote in message
news:87e56c60.02101...@posting.google.com...

>
> OK! Let's say I do decide to take out the factory AMP. Where can I
> find the wiring schematic or color codes for the speakers in the car?

Hmm... on a premium sound system, even a dealership may not be able to help
you (or it may prove costly) considering how many configurations of stereo
systems there were in those years. I'd suggest, if you wish to find the
speaker wires, pulling the speakers out physically, checking to see what the
colors of the wires are, and then looking on all of the wiring harnesses
that you can find stereo related for that exact match. After you find it,
do a continuity test with both ends unplugged to ensure that this is the
wire you're looking for. Also check wire-to-ground to ensure you do not
have a common-ground system. Most, if not all, aftermarket head units out
there require a floating ground due to the bridge amplifier design. I
believe that the premiums used floating ground speakers, so you should be ok
there.

> I have gone to some websites and most of them point to a Scosche
> FAI-3. However, there is not much more information.
>
> I have talked to several installers in my area but they don't want to
> give out their 'trade secrets'. I could always just run new wires to
> the speakers, but I know that shouldn't be necessary especially if the
> wiring is in place already.

I'd use the method that I described above, or do as Joe said and get ahold
of Crutchfield. They can sell you the adapters that will work in your
vehicle, and their sales and customer service team is supposed to have a
decent reputation. I've never dealt with them personally.

Running your own wire isn't so bad (except to the door speakers, which
SUCKS), and you know that you have the correct polarity and you can run them
to wherever you wish (i.e. installing amplifiers in the trunk, it's easier
to run your own speaker wiring so that you can cut down some of the
wiring...). But, it seems as though you're just interested in putting in a
head unit.

Also remember that in these cars there are six speakers and the only way to
properly drive them is with 6 amplified channels. You could perhaps put
them in series but I'm not sure how that would sound... paralleling them
could possibly injure your new head unit's internal amplifier by using too
low an impedance. I can't remember offhand how the factory setup works... I
believe the door speakers are tied in with the fronts, so it may in fact be
possible to drive the four fronts off of the same front output on an
aftermarket deck.

> Thanks for everyones help.
>
> Oscar C.

You're welcome. I've done plenty of systems in Fox chassis Mustangs ranging
from simple head unit installs to a complete rewiring of the audio system,
new speakers all around, subwoofers, etc. My '88 GT had three amps... one
4-channel for the dash and doors, one 2-channel for the rear speakers, and
an amp sitting on top of some 12's... configured to sound loud and clean,
not just all that bump bump shit... that was there too, but the rest of the
music was with it. Ran it all with my Rio Car MP3 player loaded up with a
10GB HDD full of MP3s... 1800 or so I believe. The output stages of that
deck are pro-quality, and the EQ is so versatile, you can set the
frequencies, and adjust all four channels seperately (frequency and level is
4-channel independant). I used the internal crossovers of the Kicker amps
to keep the bass off of the smaller speakers and keep it on the 5x7's and
12's where it belonged.

Heh... I miss that system. Still have most of the components... just need
to figure out which car to install what in..... and new speakers cuz the old
ones went with the car.... oops.

JS


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