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The Celica Files   Celica   Electrical, Audio, & Security   System 10 to Aftermarket Information

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Author Topic: System 10 to Aftermarket Information
Playfortoday
Im a sellout
Member # 1457

Icon 1 posted January 15, 2004 10:13 AM      Profile for Playfortoday     Send New Private Message       Edit/Delete Post   Reply With Quote 
I have received several emails and PM's regarding the Metra Wiring Harness ad mounting kit(pocket). I have done this write up and the end-all-be-all fact sheet. Using the wiring harness to add an aftermarket head unit allows you to keep all stock wiring and components, saving you from a complete and sometimes costly rewire of the entire system. If you are an audiophile, using the amplifier integration kit is not for you. Sound quality will be better over the factory head unit, but some people may experience some noise. I used the kit, because I want my all-trac to remain as stock as possible, and the system 10 sound is still awesome compared to almost any factory system on the market today. I kept factory speakers and added a single 10" IDQ in a .5 cubic foot in the trunk. I would say the sound is just as good as my 2004 Highlander with the full premium JBL system.

Metra will tell you that they don't make a wiring harness for the 90-93 Celica with the system 10. This is incorrect. 70-8112 is listed as TOYOTA AMPLIFIER INTEGRATION HARNESS 1992-UP. Compatible Vehicles: Lexus ES300 4DR Sedan 1992-1995. (But, it will work on the 1990-1993 Celica Sytem 10.)
NO PICTURE AVAILABLE

The same is true for BEST. Their part number is BHA-8112. Listed as 15 Pin Premium Sound w/RCA
1992-1999 Toyota.
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The most factory looking pocket to use is Metra's 88-00-8000 - TOYOTA POCKET USE w/FACTORY BRACKETS (APPS PG 32).
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or
BEST also makes the BKTN2150 - UNIVERSAL TOY/NISS/ACCORD - POCKET.
NO PICTURE AVAILABLE.

Please note: These harness will say 1992 and up; however they will work on 90-91 also. There is only one exception. A FEW(not all) 1990 Celica GT-S and All-tracs had a System 10 that had a single din cd player with a serparate single din tape player stacked on top of each other(thus, naking a double din.) These systems had an addition harness and will not work. If your unit is a single piece, double-din unit, it will work.

Additional note: Using this kit will cause some minor hissing. This is because you will be utilizing speaker wire which is unshielded, unlike aftermarket RCA's. Plus, you are sending a different quality source signal to the factory amplifier. Turning the volume past 1/4 volume will cover it up completely. On the good side, there is no engine revving noise(whining) at any volume.

Good luck.

***Please make a sticky, because I am not writing this up again. We all know the search engine sucks. [Wink] ****

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Posts: 1162 | From: Elgin, IL | Registered: Oct 2001  |  IP: Logged
ColdManWinters
teh fargin icehole
Member # 6304

Icon 1 posted January 15, 2004 11:07 AM      Profile for ColdManWinters     Send New Private Message       Edit/Delete Post   Reply With Quote 
[Bowdown]

[Thumbs Up] [Thumbs Up]
Thanks mang - you rock!

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Original owner of a faded red 1991 GT-S. Oh, and I like beer.

Posts: 827 | From: New Jersey | Registered: Dec 2002  |  IP: Logged
ChunkeyMonkey
Newbie
Member # 9231

Icon 1 posted January 15, 2004 06:22 PM      Profile for ChunkeyMonkey     Send New Private Message       Edit/Delete Post   Reply With Quote 
Great write up, was having a hard time finding info on this. One question tho at the end i got a bit confused with the double din thing. I have a 90 GTS with the cd player on top and casette under it, i've replaced both with the pocket and my kenwood deck. Will this harness work with my setup to everything working again? I think what i read was it would but just checking. Thank again

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http://www.cardomain.com/id/90celicagts
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Posts: 45 | From: Burlington Ontario | Registered: Dec 2003  |  IP: Logged
Playfortoday
Im a sellout
Member # 1457

Icon 1 posted January 16, 2004 10:18 AM      Profile for Playfortoday     Send New Private Message       Edit/Delete Post   Reply With Quote 
quote:
Originally posted by ChunkeyMonkey:
Great write up, was having a hard time finding info on this. One question tho at the end i got a bit confused with the double din thing. I have a 90 GTS with the cd player on top and casette under it, i've replaced both with the pocket and my kenwood deck. Will this harness work with my setup to everything working again? I think what i read was it would but just checking. Thank again

To be honest, if you had a two piece cd and cassette, I don't know. I have never actually looked at that setup personally. It should unless the car's audio wiring harness is different. I doubt toyota would make another type of harness, unless it was updated completely in '91.I had an extra harness that was never used, maybe it was an inline splice by the factory to accommodate two seperate sources. The easiest way to tell would probably be to see if your cd player and cassette player connect via a jumper. The best way to know would be to buy the harness and hook it up. It is doesn't help, then sell it in a forum. I am sure someone would buy it to recoupe some of your $.

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Posts: 1162 | From: Elgin, IL | Registered: Oct 2001  |  IP: Logged
ChunkeyMonkey
Newbie
Member # 9231

Icon 1 posted January 30, 2004 12:42 PM      Profile for ChunkeyMonkey     Send New Private Message       Edit/Delete Post   Reply With Quote 
Alright i've had this piece in my hand and tried on the car and the plugs don't fit. I own the 90 GTS so it won't solve this problem for u fellow gts.

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http://www.cardomain.com/id/90celicagts
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Posts: 45 | From: Burlington Ontario | Registered: Dec 2003  |  IP: Logged
Playfortoday
Im a sellout
Member # 1457

Icon 1 posted January 30, 2004 03:47 PM      Profile for Playfortoday     Send New Private Message       Edit/Delete Post   Reply With Quote 
quote:
Originally posted by ChunkeyMonkey:
Alright i've had this piece in my hand and tried on the car and the plugs don't fit. I own the 90 GTS so it won't solve this problem for u fellow gts.

This is true for some 1991's as well. I think it is dependent on the manufacture date, because some 91's have been successful and some have not.

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Posts: 1162 | From: Elgin, IL | Registered: Oct 2001  |  IP: Logged
Wolfang
Newbie
Member # 9355

Icon 1 posted February 29, 2004 11:42 AM      Profile for Wolfang     Send New Private Message       Edit/Delete Post   Reply With Quote 
I'm in the process of upgrading my head unit! An Alpine CDA-9807. I tried the Metra 70-1761 harness with no succes. I have a 1990 GTS and I'll be getting the 70-8112 harness for this tuesday.

Here's a pic of the rear of the Toyota HU:
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And here's the wiring on the dash:
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So hopefully the harness will work and the pics to be a reference of what it works and doesn't!!

Posts: 28 | From: Quebec | Registered: Jan 2004  |  IP: Logged
ColdManWinters
teh fargin icehole
Member # 6304

Icon 1 posted February 29, 2004 08:34 PM      Profile for ColdManWinters     Send New Private Message       Edit/Delete Post   Reply With Quote 
the 70-8112 will not work with what you're showing above. some of us unlucky ones have connectors that cannot be 'adapted'. trust me, i am going through this process right now. you can rig it (email me for exact info - i will save you lots of time), or you can hack into the wiring, or you can rewire the entire thing.

I made a custom adapter to connect an aftermarket HU into the system 10 amp/speakers. it's not been easy and it's not down becuase I think i fried tha amp and am in search of another one. I am about to give up and rewire the entire thing. this blows.

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Original owner of a faded red 1991 GT-S. Oh, and I like beer.

Posts: 827 | From: New Jersey | Registered: Dec 2002  |  IP: Logged


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