Metra 70-1787 Receiver Wiring Harness

Easy installation

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Exactly what I needed for my Audi thanks Crutchfield!

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Wiring harness doesn't work wiring is different than your plugs are

Have questions for
?

Crutchfield response on 5/15/2023

David contacted our Tech Support team for help. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

Metra 70-1787 Receiver Wiring Harness

Worth the money

Have questions for
?

Crutchfield response on

A MUST HAVE

It is easier to plug and play. I really appreciated it and Crutchfield's Ready Harness.

Have questions for
?

Crutchfield response on

Makes replacing OEM systems a breeze.

Works great to easy the installation of any factory replacement system without modifying the OEM harnesses.

Have questions for
?

Crutchfield response on

Needed to a Porsche Boxster 2001

Perfect fitting to a Porsche Boxter 2001

Have questions for
?

Crutchfield response on

Have to Have

By Far one of the BEST things Crutchfield does..This was the key to sucess

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Perfect!

Have questions for
?

Crutchfield response on

well put together adapter kit

As easy as plug and play. Wiring diagram explains connections easily

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Wire harness got the job done. Not a plug and play harness, had to run red wire provided (memory wire from radio) to a 12v switched source under dash near fuse box. Just use a test light to find the proper connection.

Have questions for
?

Crutchfield response on

Did the job!

Unsure as to why there any negative reviews of the product, but it worked out great for me! Packaged nicely, instructions were clear. Being a diy'er I did use customer support to help with the speaker wires on the red connector. It may self explanatory to a professional, but confusing for a novice. I'm referring to the speaker plugs as you match them up to the head unit wires. In my case, the Pioneer AVH-3500NEX has front and rear outputs included. I just needed to be sure I plugged the correct wires together. If they include that into the instructions as a side note, that would be great. Overall, I successfully installed my headunit and everything is working perfectly!

Have questions for
?

Crutchfield response on

Modification needed for 986 Boxster

Overall the harness worked as expected of a Metra integration product. My car (2000 986 Boxster S, six speaker w/ DSP) didn't need the speaker level wires, and this harness was easily de-pinned to clean it up. The one actual issue I had was with the power - I ended up having to swap 12v constant and ACC. This was a common refrain from the forums, and was the solution for me as well. Note that "power antenna" lead is required as well as amp turn-on for the Boxster, as there's an amplifier for the antenna that requires the signal.

Have questions for
?

Crutchfield response on

01 Porsche Boxster

Porsche Boxster. Easy install. Plug and play.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Good fit and works well.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

easy plug and play

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Great product

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

This is the part I thought Crutchfield was doing for me but I got it done.

Have questions for
?

Crutchfield response on

Greatly appreciated

Came with the kit. Made life very easy.

Have questions for
?

Crutchfield response on

Worked great

Worked great. On our alpine 650ilx. Integration was fine.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

easy for plug and play

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Works great with Boxster S w/ rear speakers; just plug in the corresponding RCA cable colors to the back or your receiver.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Literally plug and play.....great job.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Wired wrong. Got help from the customer service tech on what to do to correct the problem.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Makes installation easy!

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Although this harness is advertised for specific applications, the instructions and diagrams provided are very generic. This required numerous calls for technical help to ensure correct installation. Otherwise workmanship and fit was great.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

the wiring harness made the installation go in clean and quick.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

This is exactly what I needed to connect my new stereo to the car's wiring harness!

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

It took 3 tries and my own modifications but it works.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Great that I could connect without modifying MOST of the car wiring. Would be better if they had wires for all of the pins, as my factory harness had a speed wire that needed to be connected and the Metra harness had a blank pin there.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Worked perfectly and made the job so much easier.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

fit and very helpful

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

This harness does not have wires for the rear speakers. I had to buy 2 and move wires from one to the other.

Have questions for
?

Crutchfield response on 6/25/2019

Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. They can help you solve the problem and get the harness connected and working properly. Lifetime tech support comes with every Crutchfield purchase.

Excellence

The customer service was amazing and everything was very easy to use.

Have questions for
?

Crutchfield response on

Totally worth it.

This made the install so easy, thanks!

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Was not a perfect match for my original equipment. I modified the harness to match car harness. Minor delay.

Have questions for
?

Crutchfield response on

Harness for vehicle with nose amps

Easy connections extremely straight forward.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Nice perfect harness, correct for my vehicle. Thanks Crutchfield

Have questions for
?

Crutchfield response on

Oh, SO the right harness.

I put a Kenwood head unit into an Audi S4 with Bose. Took all of 15 minutes, including the test drive. This harness was a perfect fit, correctly wired, and interfaced the vehicle without modification.

Have questions for
?

Crutchfield response on

Wiring Harness problem

The harness I received did not work per the instructions. The problem was resolved after several calls to Crutchfield Tech Service.

Have questions for
?

Crutchfield response on

Wiring harness

worked like a dream. Direct fit!

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Product needed to install radio into my Porsche, couldn't have been done without it.

Have questions for
?

Crutchfield response on

Like original

Good product fit perfect

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Exact match!

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Good fit.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Everything plugged right in and played perfectly the first time. I have not used this type of adapter harness before, but I will again! Definitely worth it!

Have questions for
?

Crutchfield response on

70-1787 The Correct Harness for 996s with Bose or Hifi

This is the correct harness for any Porsche 996 with Bose or HiFi system up until 2002 (factory door speakers). Crutchfield has it wrong on their website, if you select a 2002 911 lets say, without Navigation but WITH Bose, the crutchfield website says you need 70-1784. WHICH IS WRONG. You need 1787 since you have a small yellow plug that connects to the factory installed amp; which this harness connects to using the red RCA harness in the picture above. So for reference, if you have a porsche 2002 and older, with hifi or bose system, please purchase and use 70-1787 and not 1784; as you need the red plug to tie into the small yellow plug in the factory harness. Crutchfield team needs to update. Any 996 2002 and prior (after 2002 it uses commlink and this can't be used) with Bose or Hifi radio with a factory amp has to use 1787.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Wrong harness for my car. A lot of wasted time installing and then waiting for the correct harness. Does not fit 2002 boxster.

Have questions for
?

Crutchfield response on

Easy as pie

This made installing my jvc headunit in my 96 A4 Quattro a breeze. I see there are some extra steps for the later model Audis but this was EASY.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Great quality product, the only problem we had was lack of correct instructions on how to properly wire my stereo. If you have a 2007 Audi A3 with a concert series stereo, you have to use a combination of the RCA plugs and the speaker wires. We found out that only the rear speakers are controlled by the factory amp and the front speakers have to be wired using the speaker wires provided on the harness that has the RCA plugs. If you do not wire them this way you will not get any sound out of the front speakers. I was a little disappointed by the customer service. I called when I could not get any sound out of the front speakers. I apparently called 10 minutes before tech support closed and was told that I would be called back when my turn came up. But instead, at seven on the dot central time, I received a call back, but when I answered the call was disconnected and when I called back I was told they were closed.

Have questions for
?

Crutchfield response on 3/6/2017

We were sorry to hear about Mariah's experience and the mix-up with our Tech Support team. We're forwarding this on to our Tech Support supervisors, so they can look into it. We strive to provide the best service, before, during, and after your purchase, and it looks like we missed the mark this time. We hope Mariah gives us another chance to prove we're the best in the business.

Metra 70-1787 Receiver Wiring Harness

The wiring harness is not plug and play there is a fair amount of splicing involved. Don't forget to power the antenna or like me you will have to pull the receiver back out which is no picnic.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

this harness saved the day !!

Have questions for
?

Crutchfield response on

Nice Harness

Nicely put together harness. Made installation of head unit a snap. Was able to splice the HU harness to the adapter with no issues in the comfort of the house, rather than contorted in the car. After that it was plug and play. Thumbs up!!!

Have questions for
?

Crutchfield response on

Saved me $$$

Geek Squad said they may need an adapter when I pulled in for install, it was all included in this. Saved me $50, plus their adapter costs. Thanks for including this stuff Crutchfield!

Have questions for
?

Crutchfield response on

Fantastic

I was nervous that the adapter wouldn't fit my car, but it worked perfectly. I wired the stereo to the harness in my warm house on my couch then went outside and plugged it in!

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness for 2002 Boxster S

Absolutely necessary for the head unit, Clarion CZ305, connects to the Boxster's existing wiring. The wiring harness instructions could be more explicit.

Have questions for
?

Crutchfield response on

It Works

I've set up a few units now thanks to Crutchfield and when I pull the Metra units out of the packaging, my first thought is "this feels a bit cheesy" regarding the wires and connections, but each one has worked like a charm.

Have questions for
?

Crutchfield response on

Nice solution, easy to use

While not actually plig and play the adapter fits the Porsche 911 Cab plug firmly. The plug is large but there is plenty of room for it. The low level RCA harness to the stock amp worked very well and was a hure help

Have questions for
?

Crutchfield response on

Works 100% in my 2001 Allroad

This kit works 100% perfect in my 2001 Allroad when installing a 6 year old Premier car stereo. If you're using the RCA jacks for speaker connections (which you will if you have the Bose system), you will need TWO PAC-SN1's to get rid of popping noises when starting and turning off the car.

Have questions for
?

Crutchfield response on

Very easy install

Can't mess this one up, plug and play.

Have questions for
?

Crutchfield response on

Metra

Great harness

Have questions for
?

Crutchfield response on

Instructions

The harness works well but the instruction need clarification when it comes to the power antenna connections and possibly the front speaker connections when it comes to using an amp.

Have questions for
?

Crutchfield response on

Harness

Allowed the use of my factory Bose speakers with easy wiring.

Have questions for
?

Crutchfield response on

Metra 70 -1787: Harnessing Sound

The product, upon receiving it, looks like a cross between an IED and Legos. However, it perfectly fits the stereo for my audi a3 at the perfect price (some goon at an audio supplier told me rivaling harnesses could run as much as $200! Preposterous). This product helped me replace the piece of German garbage that is the Audi Concert radio. The harness let me almost plug-and-play in terms of the stereo, and finally I can have use of an aux cord. Now I can roll down the block blasting Tibetian throat singing tunes or my cousin's grindcore band! Thanks! In any sense, I would recommend this product to other 2006 Audi A3 owners who plan on doing a DIY stereo replacement for a non-premium stereo.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

This was the suggested wiring harness suggested by Crutchfield for the ordered stereo and my vehicle information. It worked great and made installation simple and effective without destroying my vehicle.

Have questions for
?

Crutchfield response on

Porsche wiring adapter

Clear instructions for an easy installation.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Worked so well

Have questions for
?

Crutchfield response on

WORKS GREAT

FIT PERFECT , EASY TO INSTALL

Have questions for
?

Crutchfield response on

Works Like it Should

Easy to use with the provided directions. Quick and easy connections.

Have questions for
?

Crutchfield response on

wiring harness

Product simplified my install took minuets to do

Have questions for
?

Crutchfield response on

Audi conversion with Alpine Radio

Excellent fit and easy to install, anyone with a little intelligence can do this install...

Have questions for
?

Crutchfield response on

Great product

Great product, shipped promptly, and made the installation of my aftermarket CD/DVD/Navigation reciever into my 02 Audi A4 a breeze!

Have questions for
?

Crutchfield response on

Doesn't work

Terrible. Doesn't work, doesn't give you half the audio you need for a functioning system in Audi brand vehicles. The problem is the factory amp needs more voltage than a standard aftermarket radio and this harness would lead you to believe. I bought a smart harness from Enfig and it works great, you'll need it.

Have questions for
?

Crutchfield response on

perfect fit

it was a perfect fit, very easy to install

Have questions for
?

Crutchfield response on

A big help

This little beauty was a huge help in simplifying the installation of the radio in my son's 2004 Audi A4. I definitely recommend also purchasing the crimping connectors as that would have made the setup even easier. I originally planned to solder the connections together with the leads from the radio but my iron crapped out on me. I went with plan B - small wire nuts and electrical tape - which worked just fine but made the final assembly a little bulky. This is a catch-all connector for the Audi/VW cars of the era so there are some wires that are not used. I cut them back and taped them to avoid a possible short circuit. Using this connector made it painfully simple to connect the radio to the car's wiring harness.

Have questions for
?

Crutchfield response on

Free and Simple

Crutchfield is awesome for throwing in the whole installation kit for free with my JVC unit. This wire harness worked perfect and they gave me everything I needed for my 02 Audi A4.

Have questions for
?

Crutchfield response on

Nice and free

Worked with no problems

Have questions for
?

Crutchfield response on

2001 Audi TT receiver wiring harness

I bought this harness and installed it along with an alpine head unit for a friend and their audi TT. This car had a rats nest behind the original Bose system but this harness made the install super easy.

Have questions for
?

Crutchfield response on

It's Crutchfield or nothing!

I have installed countless car stereo's, my Audi A4 that this went in to was the biggest PITA out of every radio I've installed! I had originally made the mistake of buying the first wiring harness from another store, that harness wasn't wired right and was shorting out. So I ordered this one from Crutchfield with 2day shipping and couldn't be happier. They walked me through the steps needed to run a new power wire (Apparently Audi never ran a 12V power line for the stock radio!) They also were able to tell me which specific wires would be used and what ones I didn't need. Make sure whenever installing a new stereo that you install the shielding AFTER you are done with the wires! Or you'll end up with 5 stitches like me.

Have questions for
?

Crutchfield response on

Audi A3 Install

This worked well on my 2006 Audi A3 with the Concert stereo- I installed a Kenwood head-unit and it worked fine. Note, however that a few wires will not come through- neither the illumination nor switched power come through. I had to go to the fusebox to hard wire switched power- otherwise it would not have powered my deck. Used this with an Axxess ACSW-1 to control my head-unit with the steering wheel control. Everything worked just great- I'm very pleased.

Have questions for
?

Crutchfield response on

Product works great, but installation was difficult

The product itself works great, but the instructions for installation in an 2003 Audi A4 need to be updated. I was confused when the position of the wires in the adapter did not match the wire orientation in the existing harness. I called customer support and they talked me through it in no time at all... and explained that several of the connections that the instructions specified were NOT needed. The live customer support is amazing- it would be nice if the instructions were as explicit.

Have questions for
?

Crutchfield response on

Perfect, no hassle conections

Was so simple to hook up Stereo, almost full proof

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

Wiring kit fit for my car. Worked with the Bose System. Easy to connect and easy to follow instructions.

Have questions for
?

Crutchfield response on

Workded on my 2002 TT Bose!

I finally got this thing to work on my Audi TT quattro with Bose, I was ready to give up, been browsing forums for days, everybody seem to have different problems but finally got it work and what a great sound! The Bose amp is working everything is perfect. You will need to order a pair ground loop isolator though or when you turn off the car you'll get a loud "pop" in the speakers. You will also need to purchase a wire with fuse clip because you wont get the power from the harness and your HU won't turn on. It's all explained in the documentation that comes with the harness.

Have questions for
?

Crutchfield response on

Worked Perfect

This worked perfectly!

Have questions for
?

Crutchfield response on

Doesn't fit Audi A4 2002

It fits only to the extent that they snap together with Audi's harness but it doesn't give you full function of the car stereo. A work around for the rear speakers is a must. The color matching of the wires to the car is not one for one either. I installed the Alpine cde 136bt . Step by step instructions were not specific to this car enough to account for the wiring issues encountered.

Have questions for
?

Crutchfield response on

wrong harness

Wiring harness received dis not allow for rear speakers or subwoofer connection..had to order different harness

Have questions for
?

Crutchfield response on

Not all you need with a 06' Audi A3

This might work for certain Volkswagen vehicles, but this harness did not work at all for my Audi A3. You are also going need a CANBUS adapter to go with this harness.

Have questions for
?

Crutchfield response on

Great and easy to use

I saw a review for a 2002 audi TT coupe. I also have this vehicle and this harness works perfectly fine. I thought it didnt at work but you have to make sure that you use the right PRE AMP outputs. The coupe with the bose system only takes signals from the front left and right ouputs. The rear RCA were not used.

Have questions for
?

Crutchfield response on

Over all Great job Crutchfield

This harness worked very well for the installation of a Kenwood KDC-X896 head unit in my Y2K Porsche Boxster. My car has the factory "premium" sound system with amplifier in the front trunk. Only the pre-amp outputs were used as the amp provides all the power to the speakers. The power harness fit tightly. The sound/ pre-amp harness fit but only filled half of the female factory harness, which meant only one side clip locked in (which seemed to be enough). Connecting the the loose wires to the head unit was no problem (I use crimp type connectors and always have w/o problems as long as they stay dry). PAY ATTENTION TO THE NOTES!! as my Bat+ and BAT Switched were reversed as Crutchfield indicated in the note. Install went smoothly, and the unit is working great. Thank you Crutchfield!

Have questions for
?

Crutchfield response on

Pay Attention Porsche Owners

Like a few other folks have mentioned, the Yellow and Red power wires are switched for late 90s and early 2000s Porsches (986s and 987s). Very annoying. However, there was actually a note in the bottom of the wiring guide that was included that mentioned this. However, I of course didn't notice it until everything was soldered and installed. Took it out and re-did it when I realized the mistake. Annoying but functioning now. The main problem I had with this again seems to be a problem for many people. Why are the rear speaker wires missing?? Crazy. I ripped some wires out of an old harness I was throwing out and inserted them into the right places on this unit and it worked just fine. In the end, everything is working fine. However, it should have been much easier than this. This thing is overpriced at $25 for the problems it has.

Have questions for
?

Crutchfield response on

Have to modify for 2001 Audi A6

My car has a factory amp for the rear speakers and have found out that if you use the RCA cables in this kit the new stereo will make a popping noise when switching between certain opitons like FM, CD, etc. Cut off the rear RCA and plug into new stereo's rear speaker hookups to eliminate this.

Have questions for
?

Crutchfield response on

Great harness if you know how to hook the power wire

Great harness. One thing to note is in my 2003 Audi a4 the red wire did not serve a purpose in a harness. You must run the red wire from your head unit to the fuse box or some other power source. I used fuse 37(windshield wiper fuse)

Have questions for
?

Crutchfield response on

Good

Good easy to use harness

Have questions for
?

Crutchfield response on

Good, but 1 wire wrong

I've used this brand of harnesses several times, and they are always pretty solid. In this case, the switched power and battery power were backwards for my 2001 Porsche 911. I had to use a meter to figure out the right ones.

Have questions for
?

Crutchfield response on

Metra 70-1787 Receiver Wiring Harness

works great. came with everything I needed.

Have questions for
?

Crutchfield response on

Not compatible with Porsche 911 (996). Ugh!!!

No connection for speakers, only power etc. Waste of money. Installing a Kenwood stereo . Very unsatisfied with this harness. May be the last time I purchase from Crutchfield. UPDATED 1/3/12: After calling Crutchfield for support I got it to work. Thank you. I would like to change my review from 1 to 5 stars. :0)

Have questions for
?

Crutchfield response on

Not all you'll need

This harness will get you started. The 12V switched power in the harness had nothing on the car side to power on the radio. I eventually tapped into a wire on the back of the fuse box for this source. I believe the factory radio works off a CAN bus data signal. Past that, I also needed to purchase a SVEN4(additional $$) to get rid of speaker pop noise caused by the factory Bose amp turning on. Then I had to try and fit all the wiring and the SVEN4(which is roughly the size of a VCR, exaggeration) into the dash so the head unit would fit. The dash kit was then modified so the trim ring for the head unit could be used, making it more secure and cleaner looking. Most troublesome install I've ever had in 10 years. Crutchfield support was little help for this vehicle.

Have questions for
?

Crutchfield response on

Not all you need for Audi A4's