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Metra 70-8112 Receiver Wiring Harness

Connect a new car stereo in select 1992-2000 Lexus and Toyota vehicles

for matching vehicles with all car stereos $119+ for matching vehicles with all car stereos $119+
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  • Metra 70-8112 Receiver Wiring Harness

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Metra 70-8112 Receiver Wiring Harness

This vehicle-specific wiring harness makes connections between your new car stereo and your car's electrical system.

First, attach the color-coded wires on your Crutchfield-supplied harness to the wires from your new stereo. If you're not using a soldering iron, we recommend that you purchase some wire connectors to secure the connections. Check out our handy article on three ways to connect the wiring harness here.

Now, once this harness is connected to your new stereo, you'll be able to plug right into your car's factory radio connector. This harness saves installation time since you won't have to cut factory wires individually, and this also enables you to re-install the factory radio if needed. A detailed instruction sheet comes with the harness. Warranty: 60 days.

Installation Note: This harness uses your factory amplifier; your new stereo must have two pairs of preamp outputs to connect this harness.

Please read this important note: This harness may not contain provisions for every wire needed to complete your installation, and it will not accommodate special navigation, video, or factory steering wheel control connections. You will need a special adapter if you want your factory steering wheel audio controls to work with your new stereo.

See more info on this item

Note: Most vehicles will require additional installation parts — please identify your vehicle if you haven’t done so, then check here for a list of parts. You can also call an Advisor for more information.

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product Research
What's in the box?

Download owner's manual

  • Receiver wiring harness
  • Instructions

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

Crutchfield Wiring Harness: Crutchfield wiring harnesses prevent you from having to cut your vehicle's factory radio plug when replacing your factory radio with an aftermarket head unit. Simply solder or crimp the Crutchfield wiring harness to your aftermarket head unit's harness (solder & crimps not included), plug the aftermarket head unit's plug into the rear chassis of the aftermarket head unit, and plug the Crutchfield wiring harness into your vehicle's factory radio plug.

Note: Installation tools, hardware, & accessories are not included & sold separately. Please see the Accessories tab for recommendations & availability.

Wiring Notes: If the Crutchfield wiring harness is not equipped with a ground wire, you will need to ground the aftermarket head unit's ground wire to the metal chassis of your vehicle. Some vehicle's may require you to bypass the vehicle's factory amplifier (in another location from factory radio) or hardwire certain connections. If your vehicle is equipped with factory steering wheel controls, an additional adapter is required & sold separately.

Wire Code Chart:

Wire Color Function
Red +12 Volt Accessory
Yellow +12 Volt Constant
Black Ground
Blue Power Antenna
Blue/White Amp Turn-On
White RCA Left Front Channel
Gray RCA Right Front Channel
Green RCA Left Rear Channel
Violet RCA Right Rear Channel

Factory Amp Note: This harness includes RCA connections (instead of speaker wire leads) to connect the aftermarket head unit's preamp outputs to your vehicle's factory amp. Your aftermarket head unit must be equipped with front & rear preamp outputs.

The Crutchfield Car Selector: Please visit the Crutchfield Car Selector for your specific type of vehicle.

 
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Metra 70-8112 Receiver Wiring Harness Reviews

Average Customer Review:

28 people say:

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5 out of 5

Installation made easy

Written By Junior, Escondido CA on Wednesday, May 28, 2014
Crutchfield Customer Review (What's this?)
 
This is the only piece needed when you install the stereo
Pros:
Nothing else needed
Cons:
N/A
Was this review helpful?    Yes | No
 
5 out of 5

70-8112

Written By Pete, Concord,NC on Monday, May 26, 2014
Crutchfield Customer Review (What's this?)
 
Perfect fit
Pros:
Easy to install
Cons:
none
Was this review helpful?    Yes | No
 
3 out of 5

OK product

Written By Milo, San Diego, CA on Tuesday, April 29, 2014
Crutchfield Customer Review (What's this?)
 
It works fine. However, it picked up engine noise without noise loop isolator.
Pros:
Ease of use.
Cons:
Needs noise loop isolator to reduce engine noise, with noise loop isolator the audio quality dropped.
Was this review helpful?    Yes | No
 
5 out of 5

Perfect fit

Written By Easy install, Tucson, AZ on Monday, April 21, 2014
Crutchfield Customer Review (What's this?)
 
The harness fit directly into my existing wiring was perfect!
Pros:
Excellent and easy installation!
Cons:
No cons
Was this review helpful?    Yes | No
 
2 out of 5

Finally the right product

Written By Major, Chicago IL on Sunday, April 13, 2014
Crutchfield Customer Review (What's this?)
 
Finally found the connector for my stock radio. The JBL radio with the built in amp on a 1999 Toyota Solara. This product is hard to find. But at long last I got what I needed.
Pros:
If you ordered the kit to install and it was obviously wrong, this is the RIGHT one.
Cons:
Well now my dashlights don't work, so, you know, there's that
Was this review helpful?    Yes | No
 
5 out of 5

1998 Lexus SC400 Wire Harness

Written By NSRUIZ, San Diego, CA on Sunday, April 13, 2014
Crutchfield Customer Review (What's this?)
 
Easy as 1-2-3. Piece of cake. Good stuff!
Pros:
Easy to use. Minimal wires to hook up. RCAs work perfect to integrate the factory amplified Nakamichi system.
Cons:
I wish there was a way to integrate the factory subwoofer off of the factory 5 channel Nakamichi amp with this harness like it does for the mids.
Was this review helpful?    Yes | No
 
1 out of 5

Does not work on my Lexus SC400

Written By stovall, Birmingham, AL on Wednesday, April 02, 2014
Crutchfield Customer Review (What's this?)
 
I've put i in countless stereos over the years and I've screwed with this thing for 3 hours and can't even get power to my head unit let alone get to see if I get the annoying noise of the stock amp I've read all about as I rummaged the internet looking for answers. Going to just look for a working stock unit instead
Pros:
ummm, it came wrapped in plastic so not much trash
Cons:
My center console is in 40 pieces for no reason
Crutchfield response on Sunday, April 06, 2014
We forwarded this review to our Technical Support team for follow-up. Lifetime tech support comes with every Crutchfield purchase.
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4 out of 5

Metra 70-8112 Receiver Wiring Harness

Written By Anonymous, Augusta, GA on Saturday, February 22, 2014
Crutchfield Customer Review (What's this?)
 
product works great but, wasn't sent all equipment needed to perform all speakers.
Pros:
Crutchfield has the best customer service/tech support I've ever dealt with.
Cons:
so good at what they do I don't want to shop around!!
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5 out of 5

Awesome!

Written By glasj2002, Burlington, KY on Wednesday, January 29, 2014
Crutchfield Customer Review (What's this?)
 
So..wiring a stereo in some of these cars nowadays is lot different then when I was younger. My son's Toyota comes with a built in amp and and a trunk mount cd changer. Wiriing was going all over the place to say the least and if you try to get to the wiring before it begins its journey behind the dash, you have about an inch to work with in a very tight space. The wire colors mean NOTHING....you need a special legend to get the right ones - and then those are the ones going into the amp - not the radio. So - called Crutchfield - WOW - they knew EXACTLY what they were talking about. I ordered this harness to plug into the existing radio harness and it WORKS GREAT!!! No splicing, no issues... If I had purchased this first, I could have save about 3 hrs pulling off the glovebox, reseraching wiring diagrams, watching youtube videos, puttung things back on the car....

Thanks to the Crutchfield folks!!! You guys were awesome. Really love the tech.support!!
Pros:
Easy, easy, easy
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5 out of 5

Painless!

Written By bird, Lancaster, Pa. on Monday, September 16, 2013
Crutchfield Customer Review (What's this?)
 
Saved me from having to hack the factory harness and made the radio install painless and quick. Everything connected perfect the 1st. time out, Crutchfield really does their homework and they are just a phone call away if you incounter a bump in the road with your install.
Cons:
None
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4 out of 5

Lexus SC400 Receiver Wiring Harness

Written By bigt, Redondo Beach, Ca on Tuesday, June 18, 2013
Crutchfield Customer Review (What's this?)
 
Does exactly what product says it will do.
Pros:
Easy hook up.
Was this review helpful?    Yes | No
 
5 out of 5

best quality and functionality

Written By AL, new york, NY on Wednesday, April 24, 2013
 
couldn't have asked for an easier setup. All wires came pre-stripped for easy soldering to the aftermarket headunit wires. all wires were color coded and matched correctly. sound quality is awesome. RCA plugs made plugging them into the HU a breeze!
Pros:
pre-stripped, great quality, easy connections
Cons:
none
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1 out of 5

not the best harness

Written By sduke, Lubbock, TX on Friday, April 05, 2013
Crutchfield Customer Review (What's this?)
 
This was the harness Crutchfield sent to fit a 97 Celica with 6 speaker system and aux amp. It is NOT the correct harness for that application. I made it work by cutting off some ends and re-wiring. It was better than nothing...but not by much
Pros:
It came in the box with the unit. color codes were close.
Cons:
didn't fit my vehicle/receiver combo. had to modify to make it work
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3 out of 5

So so harness

Written By G, Texas on Tuesday, October 09, 2012
Crutchfield Customer Review (What's this?)
 
This harness was easy to connect and all's well ends well right? Wrong! Once you turn on the radio you get this annoying buzzing sound that can really be irritating at times. Keep in mind this harness went on a sc300 1998 with full trim package and everything. I have this can be aliminated by installing an aftermarket amp and speakers. Also if you have a center subwoofer you will lose it. So to the chase...easy harness to hook up and install but annoying sound once radio is on.
Pros:
Easy to install
Cons:
Annoying buzzing sound
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1 out of 5

Not so good in sc300

Written By Nick, NC on Saturday, July 07, 2012
Crutchfield Customer Review (What's this?)
 
Designed to use factory amps and makes a lot of noise.
Pros:
Get;s it working.
Cons:
wire like illumination missing. terrible ground noise
Was this review helpful?    Yes | No
 
5 out of 5

Awesome and easily to use

Written By 550Joe, Hendersonville, NC on Tuesday, May 22, 2012
Crutchfield Customer Review (What's this?)
 
Works great, did exactly what it's supposed to
Pros:
No need to hack up your cars harness
Cons:
None
Was this review helpful?    Yes | No
 
5 out of 5

Wow... this thing works well

Written By Scott, Indiana on Tuesday, May 15, 2012
Crutchfield Customer Review (What's this?)
 
Worked like a charm! Easy to install following the head unit and wiring diagram provided with the harness. Allowed me to continue to use the factory amp in my '98 Avalon and the sound from the new head unit is very good! I used solder and heat shrink to join the head unit to the harness... very easy to do, but if you prefer not to solder, you could easily use wire connectors to do the job.
Pros:
Fit perfectly. Low Cost Works as advertised
Cons:
Wish the illumination wire was part of the harness as an option.
1 out of 1 people found this helpful
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5 out of 5

Easy as Pie..Plugs right in.

Written By Al, Maryland on Wednesday, May 09, 2012
Crutchfield Customer Review (What's this?)
 
This is the way to go. Everything works as it should have.
1 out of 1 people found this helpful
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5 out of 5

Easiest install ever

Written By Barney Mc, Ramona, CA on Sunday, April 29, 2012
Crutchfield Customer Review (What's this?)
 
This adapter made for the easiest installation I have ever done, and it works great. I have installed a lot of car radios, most from Crutchfield, and this adapter made this installation the easiest ever.
Pros:
Almost plug and play. Only a few crimps and no cutting of the harness in the vehicle.
1 out of 1 people found this helpful
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1 out of 5

Wiring harness for 1999 Toyota Avalon

Written By Paul, Port St. Lucie, FL on Wednesday, March 28, 2012
Crutchfield Customer Review (What's this?)
 
Unfortunately, this wiring harness did not fit my Toyota. Since I had the front dash of the car already taken apart, I got a replacement harness from a local dealer and had to splice all of the wires together. The necessary wiring harness would have required 2 concentrators, not 1. Neither of the Toyota concentrators matched this wiring harness' concentrator.
Cons:
It did not work with, or match the wiring in my 1999 Toyota Avalon.
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2 out of 5

Some_Defects

Written By Sri, centreville,va on Friday, April 15, 2011
Crutchfield Customer Review (What's this?)
 
Came along with the Clarion radio for my 95 lexus es 300. Had everything good in it but there is no connection for the illumination control. So I couldnt set up the illumination control in the radio which goes dim while you turn on the headlight. I checked the harness several time but it doesnt give me the provision or mark sheet doesnt show me where to connect. Otherwise everything is perfect.
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5 out of 5

Completely Easy

Written By Mbrandow, Florida on Sunday, February 20, 2011
Crutchfield Customer Review (What's this?)
 
Had to make 1 phone call to ask for help....Couldn't have been easier!!
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-8112 Receiver Wiring Harness

Written By dug, pittsburgh , pa on Wednesday, January 26, 2011
Crutchfield Customer Review (What's this?)
 
easy to follow directions and easy to work with harness
Was this review helpful?    Yes | No
 
4 out of 5

Metra 70-8112 Receiver Wiring Harness

Written By Mddhattr, Martinsburg WV on Thursday, February 25, 2010
Crutchfield Customer Review (What's this?)
 
I wasn't worried about the illumination wire and this made hookup a breeze. You have to love Crutchfield for sending this for free.
Was this review helpful?    Yes | No
 
3 out of 5

Almost Perfect

Written By mmarzullo, Churchville, MD on Wednesday, January 20, 2010
Crutchfield Customer Review (What's this?)
 
As a previous reviewer pointed out, this harness is missing the ORANGE ILLUMINATION lead in the number 2 position. If you are OK with not having your radio dim when you turn on your headlights this won't be a problem.

I want the radio to dim when the headlights are turned on, just like the rest of the interior lights. Sure wish I had read the previous review ahead of time. I called Crutchfield to ask what could be done to fix the harness and they said sorry, they don't make the harnesses and there is nothing they can do for me.
Was this review helpful?    Yes | No
 
5 out of 5

Metra 70-8112 Receiver Wiring Harness

Written By Anonymous, dallas, tx on Tuesday, September 22, 2009
Crutchfield Customer Review (What's this?)
 
Great product, works just the way they advertised and definitely well worth it
Was this review helpful?    Yes | No
 
3 out of 5

Almost perfect.

Written By broderp, DAYTON, OHIO on Wednesday, November 12, 2008
Crutchfield Customer Review (What's this?)
 
PROS:

Very good Quality. Fits just like OEM conector on Radio, with a nice positive feel. Secure. (Good job sourcing this Crutchfield!) Wire colors matched radio for easy matching and connection.


CONS:

The connector is MISSING a wire in the #2 position for ILLUMINATION. (usually an ORANGE wire) If your car does not have a 12v wire for illumination and/ or you don't care about dimming your radio lights with the headlight switch on the car, then this may not matter.

Crutchfield was VERY accomodating and was able to help me and sent me a second one to take a wire out of to use. It required me to basically destroy the connector, and I carefully reused the crimp connector and soldered an ORANGE wire in place. The result looks like it was made that way.

I have years of experience with this type of work and access to the proper tools.

I only rate this 3 stars because of the work required for my application. I would give it 3.5 stars if I could. If the orange wire was there, I would have gave it a 5 star rating.

In case this info helps: My car is a 1995 TOYOTA CELICA GT with 6 speakers, double din headunit with separate amp. I installed a Kenwood DNX5120.
11 out of 11 people found this helpful
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5 out of 5

I love crutchfield

Written By Thomas, Gibbsboro, NJ on Sunday, April 13, 2008
Crutchfield Customer Review (What's this?)
 
I went to two local places to find a harness for my 98 Avalon and both said they had one that works and theyre sure it would work. So I go and neither fit. Thank god for crutchfield otherwise I couldnt get a aftermarket head unit. The instructions that came with it were easy to read and very helpful.
12 out of 17 people found this helpful
Was this review helpful?    Yes | No
 

2 questions already asked

I have a sony HU with only one set of outputs. Is there a connector I can get that will fit with this idea? [ Jason  Apr 21, 2014 ]
1 answer
  • I forwarded your question to an Advisor and they responded with the following: He'll need a receiver with a 4 channel pre-amp output to use that harness. The RCA connections go to the factory amp and each RCA connection represents a speaker. If he doesn't connect two then he won't be able to use those speakers. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy Staff  Apr 22, 2014 ]
OK, So my head unit has a amp turn on wire, do i hook up the blue/white wire on the Harness to the blue/white wire on the Head unit? i want to make sure that if i do this it wont fry anything. [ Lorenzo  Dec 20, 2013 ]
1 answer
  • If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: http://community.crutchfield.com. Or try our online support center: http://crutchfield.custhelp.com/app/answers/list/kw/. [ Jeff Staff  Dec 20, 2013 ]

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For a more in-depth review and enhanced detailed information on the Metra 70-8112 Receiver Wiring Harness, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_120708112/Metra-70-8112-Receiver-Wiring-Harness.html ).

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