HOZZMANRX7

iTrader: (43)

The online factory manual for s4 is for a 1988 version. In this case, the '87 radio (Radio/cassett/eq) wiring is different than anything in the '88 manual. To describe further, my '87 (i believe) self amp'd rear speakers and no door sub-woofers.

I want to marry a S4 head unit (with AE) out of a '88 into my '87, so need to understand what wire does what in my '87 TII so I can connect the dots.

Anyone that has a '87 factory manual, please scan the pages to capture both the wiring diagram page and the page that shows how the wires run to the connector plugs. E-mail to dahozzman@hotmail.com.

Alternatively, if there is a '87 FM online that someone knows about, please provide a link.

I'll owe you not only my great gratitude, but beer(s) of your choice at the up coming 7Stock.

Thanks.

jonesfromindia

i have a complete wiring diagram of an 87. but its in a book kinda like chiltons. if you want tell me what you need me to search for. it might be hard but hey, im bored.

jonesfromindia

sent pics. check e mail.

HOZZMANRX7

iTrader: (43)

Boy am I glad you were board.

Got your e-mail, but it held the same '88 diagram. However, your reference it came from a aftermarket Chilton manual did the trick. Made me remember I have a Haynes version. I pulled it, and it had exactly what I was looking for.

Thanks.

arghx

iTrader: (3)

he's trying to keep it 80s yo

My5ABaby

iTrader: (7)

+1

Icemark

The wire colors are the same, regardless of year. It is where the plugs go, that changes depending on the headunit.

I have the shop manulas for the 87 models, but need to know which head unit set up you are doing (there are like 6 different ones).

This is the standard radio layout for 87:

HOZZMANRX7

iTrader: (43)

Ted,

What they said. This is for my '87 TII whose theme is 100% stock. The one that was parked at the entrance of 7Stock last year.

Icemark,

The '87 head unit is exactly the one indicated in the picture. What I'm looking to replace it with is the upgraded version head unit with AE (radio, cd,cassette, duo mute buttons). No door speakers, so don't have the door speaker amp.

It looks like my '87 unit is designed for rear speakers that each have their own amp, while the AE head unit is designed for non-amped rear tower speakers. True?

Icemark

The only difference is on the AE radio's they is an additional 6 pin Din cable, that would go to a small amp behind the drivers dash speaker that feeds the door speakers.

And yes, the rear speakers on a AE system are powered by the amp bolted to the bottom of the headunit, behind the mute/side switch assembly. It is a time aligned and equalized amp.

HOZZMANRX7

iTrader: (43)

Not a show car so much as a showy daily driver that I went to great pains to restore. Maybe someday a stock stock '87 TII can be considered a show car. When that happens, I look forward to the offer I can't refuse. Actually, an offer I can't refuse now would probably not be refused.

My interest to using this factory stock head unit in replacement of the original one is that the AE version is designed in a way I can plug an aftermarket CD changer directly into the head unit. Sound quality superior to a typical RF version, so allows me a level of state of the art tunes while still keeping the stock theme. Did this to my S4 Vert head unit, and it works great.

What's cool is it is the 5th oldest VIN of it's type on the road in the US, at least on your registry. And I have the original factory sticker. So, maybe one day..................

HOZZMANRX7

iTrader: (43)

"AE system are powered by the amp bolted to the bottom of the headunit"

So, I'd need to replace the factory rear speakers in my TII? The diagram I found indicates the stock ones are individualy amp'd in each of the towers. Am I reading that diagram right?

Icemark

yeah all the Pioneer AE systems that I have seen, non of them have had powered rear speaker, but rather just the regular rear speakers driven by an amp.

If you already have the powered/amp'd rear speakers, then just wire past teh amp at the speaker, until you get the replacement speakers.

Its just the AE rear sepakers are 170mm instead of 135mm

Icemark

and no more flaming in this thread gentlemen... The thread has been edited for it.

Icemark

<edited for content>
I too am putting the OEM radio back into my 10thAE.

HOZZMANRX7

iTrader: (43)

Boy. What with this return to stock radio trend, our friend RETed must really be .

If you want to do what I'm doing, look for a changer that has a signal wire that will send a ground to the head unit when it's turned on. Otherwise, as you know, the head unit won't know to look to the DIN plug for the source signal.

I know of one SONY model I used for my Vert, but it's a discontinued version. I managed to find another one on E-bay, so ready to install now. I'm interested in what current units might have this same signal wire designed into it. Otherwise, let me know and I'll let you know the model number and you can shop e-bay as well.

Icemark

yeah, I actually was thinking of using a MP3 player instead. That way a simple mini phono jack with built in switch would pause the AM/FM and power everything, without being very obtrusive.

The stock AM/FM headunit is a decent non-RDSS unit and still 20 years later a better unit than many current models. Its just the media is long since outlived its welcome.

With my 10thAE, with a few minor exceptions (like I went with a very good 5sone fiberglass sunroof panel, and new better quality full leather seat covers, and much better newer speakers) is being restored back to original condition. So the stock head unit needs to look and work perfect. A little jack next to the headunit on the trim panel that says MP3 is all that will be changed.

MPLSrx7

does anyone have a guide that says what color does what? someone took my brand new alpine and they were too stupid just to upplug it from the wiring harness. so now i have no plugs just cut wires. so i dont know how to wire up a new deck.

thanks.

Icemark

Yep, in the FAQ for FC sticky thread. You should always read the FAQ for FC sticky thread before posting.

HOZZMANRX7

iTrader: (43)

On subject:

Icemark,

I'll take you up on your offer at 7Stock for sure. Also, I notice that on the AE system, both the front and rear speakers are powered from the same signal source out of the head unit. The only difference to the feed to the front and rear speakers, per the wiring schematic, is there is some sort of resistor inline to the rear speakers. I would expect that the resistance is variable so you can balance the sound from front to rear. But, that would mean some sort of separate balance control akin to the joystick in the GSL-SE. Of course there is none. How the heck does the AE system balance the sound front to rear?

Separate, do the balance control on the head AE head unit (AEC ****?) adjust the sound going to the door speakers? I'm thinking plugging the drive amp out of the old '87 unit into the DIN on the head unit for the door speaker amp and treating that as the feed to my amp'd rear speakers.


Off subject:

RETed. You're web site FS3SPro.com provides nice value to the RX7 community such that I have it saved in my favorites. I encourange anyone that hasn't checked it out to do so, especially if you own a Turbo II. Also, Most times I for one appreciate the constructive information you've shared on this forum.

This wasn't one of those times.

Destructive put downs, such as your were your comments, serve no purpose other than to create negative noise. All FC3S91 was doing was calling you out for doing it here and apparently for your penchant for planting such irritation in threads much too often. Maybe he wasn't saying it in the same manner that Flower said it to Thumper, but the message is the same. And if you don’t know what I mean by that reference, any child that has watched Bambi can instruct you in the error of such noise.

Icemark

Thread pruned again for off topic posts, and flaming.

I don't know why some people just don't get it.

If you have a problem with someone, PM them. Don't crap in other peoples threads.

Anymore posts like that and I'll start warning and/or banning.

HOZZMANRX7

iTrader: (43)

Then feel free to prune mine as well.

Still interested in your comments on what should be my final question. I think I've got it handled otherwise.

Also, your suggestion of a mini-phone jack with built in switch is a heck of an idea.