Problems with 1988 mustang aftermarket stereo installation. - Ford Mustang Forum
 
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post #1 of 7 (permalink) Old 04-15-2014 Thread Starter
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Problems with 1988 mustang aftermarket stereo installation.

Hey mustangers!

Having some issues wiring up an aftermarket stereo deck to my fox. It has the premium sound package, which is why it's confusing as hell lol.

So far, I've taken out the stock cassette player unit, and I've taken out the stock little "football" amp too. I've got a Haynes manual and I have all the wiring diagrams but something's fishy

The problem is this. I hooked up the right front speakers to the deck and I can't get any sound out of them. The wiring diagram shows a white/red wire for the positive and a green/orange wire for the negative. I spliced those to the wiring harness on the deck to their corresponding spots and I've got nothing.

I'm a little stumped, and I've heard that these premium sound mustangs are a damn nightmare, about this close to saying screw it and making it car toys' problem

Any ideas?

If needed, I can take pictures and give more details tomorrow (I work graveyard shift at the 'ol jail, hence the midnight posts).

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post #2 of 7 (permalink) Old 04-15-2014
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On my 89 (your 88 should be the same)...... there were 2 different harness's up under the dash I had to use. One puts power to the newer stereos but I could get no sound from that harness; my buddy tells me that 's because of the way the newer stereos are wired inside. I had to splice into my second harness for my sound.

You do that by going to a proper stereo outlet. They carry a kit for your specific year (88), the wires are color coded in the kit to match the colored wires in the other harness that I mentioned (there are approx 5 or 6 different colored wires; you just splice them together.

Use proper wire connectors and crimp them, don't do a hack job with tape. Your correct ... on your 88 the amp has to go like you mentioned because the newer stereos have the pre amp built in.


------------------------------
1989 coupe
1992 coupe
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post #3 of 7 (permalink) Old 04-15-2014
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Try crutchfield they will have harness to install your new radio.
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post #4 of 7 (permalink) Old 04-15-2014
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I just did this to my 88 mustang. the speaker wires are way the hell up in the dash separate from the pigtail you get the power and ground from. Ill take a picture of it and post it in a few min. the pigtail you get the power from has the same colored wires as the speaker wires so you think your hooking up the speaker wires but youíre not you just hooking up to a disconnected wire that use to go to the amp you took out. itís easier to get to the actual speaker wires from the passenger side floor/side area then to get to it from the head unit hole. I put all my connections together over in the passenger side floorboard then pushed them back up and into the head unit area.
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post #5 of 7 (permalink) Old 04-15-2014 Thread Starter
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Quote:
Originally Posted by Lt mac View Post
Try crutchfield they will have harness to install your new radio.
The first thing I did was clip the old connectors off, wouldn't be an issue if my buddy didn't lose them =[ Can't take the easy way with the crutchfields lol.
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post #6 of 7 (permalink) Old 04-15-2014 Thread Starter
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Quote:
Originally Posted by foxhtn View Post
On my 89 (your 88 should be the same)...... there were 2 different harness's up under the dash I had to use. One puts power to the newer stereos but I could get no sound from that harness; my buddy tells me that 's because of the way the newer stereos are wired inside. I had to splice into my second harness for my sound.

You do that by going to a proper stereo outlet. They carry a kit for your specific year (88), the wires are color coded in the kit to match the colored wires in the other harness that I mentioned (there are approx 5 or 6 different colored wires; you just splice them together.

Use proper wire connectors and crimp them, don't do a hack job with tape. Your correct ... on your 88 the amp has to go like you mentioned because the newer stereos have the pre amp built in.
Yeah I do a pretty good job with tape but after some years it won't be so good lol I'll buy some crimps. I think i'll save this for the weekend, but I think I understand what you're saying. I basically have to splice the amp harness to the stereo harness to the aftermarket stereo harness.
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post #7 of 7 (permalink) Old 04-22-2014 Thread Starter
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Quote:
Originally Posted by foxhtn View Post
On my 89 (your 88 should be the same)...... there were 2 different harness's up under the dash I had to use. One puts power to the newer stereos but I could get no sound from that harness; my buddy tells me that 's because of the way the newer stereos are wired inside. I had to splice into my second harness for my sound.

You do that by going to a proper stereo outlet. They carry a kit for your specific year (88), the wires are color coded in the kit to match the colored wires in the other harness that I mentioned (there are approx 5 or 6 different colored wires; you just splice them together.

Use proper wire connectors and crimp them, don't do a hack job with tape. Your correct ... on your 88 the amp has to go like you mentioned because the newer stereos have the pre amp built in.

Confirmed, you were right! Everything works like a charm now, hell of a lot of wiring work. Just put in a full set of kicker speakers too lol. Case closed!
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