2015+ WRX Harman Kardon Android Head Unit Wiring and Hum Fix

0:00all right so I'm going to make a quick insulation video tips and how I have everything wired this is not going to be a step by step because I already have it installed so um it's going to be a quick kind of summarizations of what's going to

0:18happen so let's go talk look at the back and then we'll probably figure out from there again there are many units there's this is the 4.4 one there is the uh 5.1 one which it looks very similar but for the most part let's just go break it down by each Port got the power which

0:33carries most of all the the the signal the VTR carries the audio and then we have the USB GPS and you have your antenna so let's start with the power right there this is the cable you're

0:48going to get from uh the seller it's going to be it's going to generally carry you know your steering wheels controls your auto antenna uh one of the blue wiring the IR uh reverse detection headlamp detections accelery power

1:03ground etc etc so this is going be your main cable it also carries audio too but I don't use the audio off of this cable I use the RCA ones so that's something to keep in mind of and as you can see I have it wrapped up all the way here I'm not an audio installer by any means so

1:19this is the way I installed it I pretty much crimped the uh the wires or I spliced it into these are my harnesses that I bought from a64 um so yeah so that's how I did it for for temporary jobs so there you go

1:36if you have the base model you should be able to just plug into this this is what I heard you just plug in this cable and you don't have to deal with anything else if you have you know the Harmon Card in you're going to have these audio um you need these audio stuff right here

1:51this is a six I believe like a six pin or eight pin and then there's also a 10 and six pin for audio so there that's going on there um the seller also included this guy right here which is the antenna adapter which

2:06is really useful so I still have FM right there so that's the main thing right there and you can see it wraps all the way up and then plugs into the base model with no problem Haron Cardon you're going to have to splice it through certain wires to get the power

2:21and all that crap uh the next off U let's talk about the VTR which is um I believe it's the pre-outs or pre amps what I had to do here is let me show you so then this is the preamps so yeah you got all these rcx it

2:31What I had to do here is let me show you so then this is the pre-amps

2:34So, yeah, you got all these RCA jacks.

2:38It also includes things like the front camera, the rear camera, video out if you want to

2:43hook up an N64 or PlayStation, etc.

2:46So, this is the port you're going to get from them.

2:50And here are my, let me show you, the harness I got from AE64 because it makes it a lot

2:58easier.

2:59So, here is the, I believe the 10 pin, it's right there.

3:11jacks all right so for this next segment this pretty muchy for the Harmon Cardon people out there this is uh the pins that I needed cuz the base model is Plug and Play pretty much from what I heard um so let's go start with it this is the

3:2710 pin I believe so this I got this from the E64 uh 10 pin harness and that's going to be wired through most of your stuff like uh the amp as you can see the blue wires is one is AMP one is uh remote amp startup and this one's like

3:42an antenna right here as well as constant power battery uh accelerated power and uh the ground you also have some audio um audio signals coming from this port too so with the ae64 they

3:58Supply the rcx for you uh that way you can just plug in straight into the unit okay and then there there the next one um for you guys is the 28 pin so there's the 28 pin right there check get

4:00That way you can just plug in straight into the unit

4:03Okay, and then there's the next one for you guys is the 28 pin. So there's a 28 pin right there

4:15All right, so with the 28 pin guys

4:21This controls this has aux so when you want to plug things are ox, which I already have it plugged into here

4:27But so you get ox and then you have your three steering wheel controls

4:32you know the one I'm holding right here these three wires control uh uh positive negative than the ground itself so that's the steering wheel controls I actually have two more pins too but uh I'm not using them I believe one is um

4:48vehicle speed and the other one is um I don't remember but uh you don't use these two ones with the harness kit that he gives you at a64 so we start we talked about the 28 pin we talked about the 10 pin and

5:04there's also the six pin so the six pin harness for you guys it looks like this from a64 you um the only purpose is the audio for the rear I believe or the front believe these are the rear so then you just plug these in to the to straighten to the original harness and

5:21you should be good as you guys know there is some humming noise that's coming through um I try I try grounding other Solutions I'm not an audio installer by any means as you can see I have these crimp wires I did this because I want to be

5:30I'm not an audio installer by any means as you can see I have these crimp wires this because

5:36I want to be reversible just in case I wanted to give this to my brother or something because he has a 15

5:41Wx2 that way he can still retain this and I didn't want to cut anything. So

5:46That could have caused the hum too. Who knows anyways, um

5:50these are

5:54These are the loop ground loop isolators

5:59These guys remove the hum for me. Um, I bought this at Best Buy

6:00me I bought this at Best Buy it

6:03was like 10 12 bucks or something like that and I bought two and it reduces the

6:08noise about I would say like 90% so it's a big difference if you get these

6:13guys it will remove the hum almost completely I ran these guys in parallel

6:19So or in series, I guess so I had RCA jacks here

6:24then I just kind of went through them and then it further reduced the noise even more I

6:29Played a song too and I was like hey, he's gonna make the sound sound any different to my ears. It doesn't so spew

6:41front uh cuz 90% you still have that 10% which is doable you have the audio on you're not going to really hear it but if you run them in series uh it I would say they remov in the 9% so there's like a 1% of you can't even really hear that

6:56but so I'm not I'm debating if I should get another box um I know people say some this is a Band-Aid solution you know I again not an audio guy but this is what worked for me and I just want to share with you guys

7:11um so yeah so that's the main thing right there and these are kind of the so these are the plugs these are the factory harness that I didn't touch you know you buy these harnesses from ae64 you don't ever have to touch touch your factory harnesses which is really nice

7:28that way you can keep them in pristine condition okay so if you guys have any other questions let me know um that's the in that's pretty much the cable walk through um and uh what I needed to do to get it to

7:43work uh oh yeah let me just not one more thing so um so with the with the unit I bought AliExpress uh as you can see here it has a fan I know the 5.1 ones they actually

7:59screwed out a little more and it looks like it's a fanless design so you actually pay a little bit more uh to get that beef your heat sink set up uh what I did right here was I remove these screws here and then um took out this little panel and then I there's I can

8:02you actually pay a little bit more to get that be for a heat sink set up a what

8:07I did right here is I remove these screws here and then took out this

8:12little panel and then I there's I can see the processor so I slapped a heat sink on

8:20it to keep it cooler because it had no heat sink at all whatsoever and then for

8:24this fan it's actually pretty loud it's super tiny fan I put I put some

8:29resistors to quiet it down it does slow the RPM but with the heat sink I

8:30to uh quiet it down it does slow the RPM but with the heat sink I think I can I think I could just run it without the fan at all and uh it should be still okay because with that heat sink I put it put a pretty uh pretty good size heat

8:45sink under this uh silver part so that's what I did for that all right all right so I got my

9:00tripod set up so you can see a little bit better first off let's try volume control side boys there you and right the radio turn