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Old 11-07-2004, 05:33 PM   #1
integroid
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Default Aftermarket Wiring Harness that plugs into factory HU

Does anyone know if their is such a thing? I noticed that the Hyundai wiring harness is the actual same size and shape as the Subaru wring harness. The wiring diagram is not the same, but the physical plug is. Just wondering if anyone has found anything that will plug into the factory radio on a 02+ WRX.
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Old 11-07-2004, 05:57 PM   #2
iceNine
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If you know someone who has trashed their factory sub (like me ) you can use the wiring harness from that. It plugs into the factory HU and the car wiring harness plugs into the other side. I hacked into mine (figuring it was not a permanent change to the stock wiring harness) to connect up my amp and Basslink (through an LOC).

Dale
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Old 11-07-2004, 09:35 PM   #3
Crump
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ya, it will plug right in, but the pins are not going to match up in the wiring harness. If you really wanted to use one for the radio you could, however you should use a dmm to test for power, and speaker colors.
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Old 11-07-2004, 11:03 PM   #4
integroid
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Actually, after doing some research online, I found that Scosche makes one. I found a place that sells it for $9. Thanks for your help guys.
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Old 11-09-2004, 02:03 AM   #5
SVXdc
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The Scosche reverse harness lacks one of the illumination wires. The stock HU won't light up correctly without this.

I've been making reverse harnesses with all 14 wires. Send me an e-mail if you're interested.


David C.
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Old 11-09-2004, 11:48 PM   #6
subimp6u08
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I need one of these wiring harness, I had to cut my harness from the stock amp when i sold my stock one, and i'm putting different stock one again, but it would be nice if i can just get the whole new cable for the amp or something
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Old 11-11-2004, 02:12 AM   #7
SVXdc
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Quote:
Originally Posted by subimp6u08
I need one of these wiring harness, I had to cut my harness from the stock amp when i sold my stock one, and i'm putting different stock one again, but it would be nice if i can just get the whole new cable for the amp or something
By "stock amp" do you mean the stock HU (radio)? (as opposed to a subwoofer/amp)

The stock plug for the radio is part of the instrument panel wiring harness. A new one of those will cost >$100 (and require disassembling most of the dash). A replacement harness for the subwoofer is available too, price ~$75.

What I'm selling is the 14-pin plug that plugs into the stock radio (AKA, a "reverse" wiring harness). The wires are about 6" long, with pre-stripped ends. It looks like this... WRX Reverse harness

If you're interested in getting one, send me an e-mail (click on my user name at the upper-left corner of this post, then click the "send e-mail" link). See this thread on the SVX forums for testimonials from other satisfied buyers.

Last edited by SVXdc; 10-31-2009 at 07:12 PM.
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Old 11-12-2004, 12:11 AM   #8
gargleblaster
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SVXdc - you've got mail!
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Old 11-12-2004, 01:07 AM   #9
integroid
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Thanks SVXdc for the spare pins and wires. If anyone needs a harness, he is the person to talk to!

Here is a pic of my finished product. Plug and Play RCA output harness for my stock 05 WRX radio! All this so I wouldnt ahve to hack up the factory harness. Notice the green/black wire under the orange. SVXdc supplied me with the extra wire and pin for both connectors so I would retain illumination on my factory radio.



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Old 11-12-2004, 02:21 AM   #10
2ndGearFling
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wow...thats very interesting.
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Old 11-12-2004, 08:42 AM   #11
Daboro's Rex
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Not flaming bro but thats a no no, you shouldnt use twist caps or use crimp caps.
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Old 11-12-2004, 02:07 PM   #12
integroid
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Says who? I have been installing car stereos for over 15 years and I couldn't tell you an isntaller that used a soldering iron on an everday basis. Hell, the last time I used a sodlering iron was when I was modifying my ecu board in my Honda a few years ago. I agree on the twist caps but crimp connections? Are you serious? Go to any car stereo shop and let me know if you see anyone soldering any of the connections. I can promise you that they will all be using crimp connectors and have a big bin filled with all sizes of crimp connectors and crimp caps.
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Old 11-18-2004, 01:39 AM   #13
SVXdc
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Quote:
Originally Posted by integroid
Thanks SVXdc for the spare pins and wires. If anyone needs a harness, he is the person to talk to!
You're welcome. Glad I could help.

Quote:
Originally Posted by Daboro's Rex
... you shouldnt use twist caps or use crimp caps.
Crimps will certainly work, but I prefer to solder -- makes for much smaller junctions. Like this...



For more pictures and tips, see section 2.5.4 of my SVX Audio Install instructions (scroll down to steps 10 and 11, and click on the thumbnails for larger pics).

It helps in the SVX, where there's very little space behind the radio. BTW, where did you find space to cram that LOC in the WRX?!

Last edited by SVXdc; 10-31-2009 at 07:11 PM.
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Old 11-18-2004, 10:29 AM   #14
integroid
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Quote:
Originally Posted by SVXdc
You're welcome. Glad I could help.
Crimps will certainly work, but I prefer to solder -- makes for much smaller junctions.
I certainly agree but I dont have the time to solder every wire. My wife was already yelling at me to help with the baby so crimp connectors it was.

Quote:
Originally Posted by SVXdc
It helps in the SVX, where there's very little space behind the radio. BTW, where did you find space to cram that LOC in the WRX?!
LOL, that thing is a boat anchor. I shoved it above the radio between a metal beam and the top of the dash. It was actually pretty easy and fit fine. I put some foam insulation tape on both sides so it wouldnt rattle.
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Old 11-18-2004, 07:44 PM   #15
iceNine
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I always use crimp-on bullet connectors. I like to be able to disconnect them whenever I want if I put in new gear or want to put it in another car (or realize that I've connected up the wrong wires by accident ).

Dale
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Old 04-14-2007, 12:33 AM   #16
tim.medina
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Default Ipod connector

Quote:
Originally Posted by SVXdc View Post
The Scosche reverse harness lacks one of the illumination wires. The stock HU won't light up correctly without this.

I've been making reverse harnesses with all 14 wires. Send me an e-mail if you're interested.


David C.

I have an '05 WRX wagon and want to connect my ipod to the stock stereo. I read in your post above that you are selling harnessess to make this work. Is that correct? If so i would like to buy one.

Thanks, Tim
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Old 04-14-2007, 01:34 AM   #17
SVXdc
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Quote:
Originally Posted by tim.medina View Post
I have an '05 WRX wagon and want to connect my ipod to the stock stereo. I read in your post above that you are selling harnessess to make this work. Is that correct? If so i would like to buy one.
I do sell the 14-pin harnesses, which allow you to access the power and speaker wires. People typically use these to add an amp or a subwoofer. See my "homepage" for more info (click on my username to see link).

Unfortunately, my harnesses won't enable you to create an aux input for you iPod. The easiest way to do that on the '05 radios is with a hack that you can install inside. See this thread: Subaru Radio Aux-in
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Old 04-14-2007, 08:07 AM   #18
snowcrazy
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excuse my ignorance, but is this reverse harness so you can have an aux input on a stock cd player or so you can power an aftermarket amp/sub with the stock cd player. I want to power an aftermarket amp/sub with stock cd changer, do I just need a oem amp/sub harness? Please clarify for me. Thanks
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Old 04-14-2007, 09:15 AM   #19
hector
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Just as a future reference Metra makes a reverse harness for just about every harness they make. Usually it just has different prefix check with metra online.
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Old 04-14-2007, 09:34 AM   #20
thedaddyb
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Quote:
Originally Posted by integroid View Post
Says who? I have been installing car stereos for over 15 years and I couldn't tell you an isntaller that used a soldering iron on an everday basis. Hell, the last time I used a sodlering iron was when I was modifying my ecu board in my Honda a few years ago. I agree on the twist caps but crimp connections? Are you serious? Go to any car stereo shop and let me know if you see anyone soldering any of the connections. I can promise you that they will all be using crimp connectors and have a big bin filled with all sizes of crimp connectors and crimp caps.
so what do you use when you do alarms and remote starts? scotch locks?
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Old 04-14-2007, 09:44 AM   #21
hector
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The shop I work at uses T Taps and crimp connectors on everything. Reason being that the average customer will be back in less than 2 years to have there stuff uninstalled and reinstalled in a new car and its just easier. In the last 6 years I have seen one t tap failure and it was because the installer used a red t tap on like 20 ga honda lock wires and it wasnt really a solid connection and it int. didnt work. On my vehicle I solder things just becasue I know I will have it for a while but in a biz where time is money solder just doesnt make sense.

Last edited by hector; 04-14-2007 at 11:49 AM.
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Old 04-14-2007, 11:22 AM   #22
Eluder
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I got my new deck installed just a couple of days ago... the installer actually used the Hyundai harness and just connected each wire to the appropriate wire of the Pioneer harness, plugged one end into the deck, the other into the factory harness, and all is well. It looked like he went colour for colour, but I wasn't paying attention, it's not the first time he's installed a deck into a scooby, so I had confidence in him.
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Old 04-14-2007, 01:52 PM   #23
SVXdc
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Quote:
Originally Posted by snowcrazy View Post
excuse my ignorance, but is this reverse harness so you can have an aux input on a stock cd player or so you can power an aftermarket amp/sub with the stock cd player. I want to power an aftermarket amp/sub with stock cd changer, do I just need a oem amp/sub harness? Please clarify for me. Thanks
Most people use a reverse harness to drive an external amp or sub from the stock radio/cassette/CD (head unit). You can also use this harness to transplant a Subaru HU into another car.

The reverse harness plugs into the stock HU, and provides the power and speaker connections. It looks just like the end of the car's factory radio harness...

(click for larger image)

A "forward" harness is what you normally use to install an aftermarket HU in place of your stock HU. This plug looks like the connector that's on the back of the stock HU...

(click for larger image)

Subaru stock HUs don't have line-level outputs. So to connect an external amp (for either speakers or a subwoofer), your only choice is to tie into the speaker outputs.

The clean way to do that is to combine a reverse harness along with a "forward" harness (as Integroid did -- see pictures in post #9). Basically you make a short extension cord for the stock HU, so it still gets all 14 wires as it did before. This gives you a place -- between these two harnesses -- to connect wires to send to a Line Output Converter (LOC) or directly to an external amplifier that has speaker-level inputs. This way you can avoid having to cut or splice into the factory wires.

If you ever want to change anything later, you can easily unplug the new wiring and make any mods, or replace it. You can also go back to the stock installation with no evidence -- great if the car is leased.

Just make sure that both harnesses have all 14 wires. See my pin-out table for info on ones that do.

Last edited by SVXdc; 04-02-2012 at 03:12 AM.
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Old 04-14-2007, 01:53 PM   #24
SVXdc
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Quote:
Originally Posted by hector View Post
Just as a future reference Metra makes a reverse harness for just about every harness they make.
Metra doesn't make a reverse harness for 93-up Subarus.

As I said above, the Scosche reverse harness lacks one of the illumination wires. The illumination on the stock HU won't work without this.

The whole point of a reverse harness is to use with a factory radio, so I don't know why Scosche continues making theirs with only 13 of the 14 wires.

[Update:] Metra now does have a reverse harness. You still need to verify that it has all 14 wires. I keep looking periodically, and to date "forward" harnesses from Metra, Scosche, and all the other big harness manufacturers still have only 13 wires.

Last edited by SVXdc; 04-02-2012 at 03:07 AM.
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Old 04-17-2013, 11:42 AM   #25
jcardisco
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Default The new HU turns off when my headlights are on

Last night I installed the HU receiver above but this morning when I turned my headlights on the screen goes blue and the radio volumes goes to near zero. I then cannot increase the volume nor control the receiver in any way (just a blue screen). I wonder if you can help out. I used the appropriate harness, but if I leave off the orange wire (backup camera) would that solve the issue? I don't have a backup camera but the blue screen that comes on when the headlights show says something about the AV input or the backup camera.

Also I connected the pink (parking brake) wire to ground so the DVD player would work. Is this a grounding issue because the unit works great until the headlights come on?

How do I get the headlights not to turn the stereo off?

Please assist.

Here is what I installed:
Harness


Stereo:Stereo:
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