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Old 09-04-2016, 12:34 PM   #1
sgsVA
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Default help with basic sat upgrade with SXV300v1

Hi. New here but I just purchased a 2013 Impreza sedan with the stock OEM radio. I'd like to replace it with the sat-ready WRX (Clarion PF-3292A-A) and add the SiriusXM SXV300v1 tuner. Seems easy enough but I apparently need an adapter to make it work. Does anyone have a part number for the adapter or has done this to add the tuner to the WRX Clarion? Thanks.
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Old 09-06-2016, 01:58 AM   #2
SVXdc
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What is the model number printed on the front of the OEM radio in your Impreza?

Switching to a WRX CZ624U1 (PF-3292A-A) or similar alternate OEM model would only be helpful if you planned to add Subaru's satellite radio tuner accessory. Those connect via the black 20-pin "SIE bus" expansion port on the back.

There are some aftermarket boxes that connect to that port and allow you to connect an iPod, aftermarket sat radio tuner, or an additional aux source. But I don't know whether any are compatible with the CZ624U1 or your OEM HU.

Crutchfield currently has some boxes by Vais Technology that connect to a Subaru's USB port. I don't know all of the Subaru HU models those are compatible with or how well they work.

Aside from those, your only option would be to connect a sat radio tuner via the OEM HU's aux input -- something you could do with your existing HU. In this case, you would need a different tuner box that has its own display and controls.

Yes, you could also connect into the antenna port via an FM modulator, but that's worse quality than using the aux input and not worth pursuing.

(FYI: I had asked a moderator to make your post the start of a new thread rather than be in the 2016 thread where you had originally posted it)
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Old 09-06-2016, 01:58 AM   #3
SVXdc
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If you're willing to switch to an aftermarket HU, you may find one that provides improved integration with the SXV300v1, including better/longer display of the station and song info on the HU's screen, control via the HU's buttons, and a more user-friendly interface to the SXV300v1.

Even with an aftermarket HU, you can still retain your car's steering wheel controls and aux and USB sockets.
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Old 09-07-2016, 08:57 PM   #4
sgsVA
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Thanks for the guidance but in my search for a cable to match the tuner to the 20-pin bus I may have found a better solution. Thanks to the threads on this forum I was made aware of the 86201VA620 HU, labeled CV629UM, which has the XM tuner built in. Don't need the navigation; still want the wheel controls to work and just add XM. It looks like an exact fit. I've ordered one and expect delivery soon. My only questions are: 1) should I assume the antenna is already hidden in the dash since this is a 2013 2.0 Premium model, and 2) can I expect to encounter any surprises (new cables, plugs, etc.)? Any help would be sincerely appreciated. Thanks.
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Old 09-08-2016, 01:56 AM   #5
SVXdc
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Default Issues transplanting 2015 WRX/STi CV629UM into 2012-2014 Impreza

Quote:
Originally Posted by sgsVA View Post
...
I was made aware of the 86201VA620 HU, labeled CV629UM, which has the XM tuner built in.
...
My only questions are: 1) should I assume the antenna is already hidden in the dash since this is a 2013 2.0 Premium model, and 2) can I expect to encounter any surprises (new cables, plugs, etc.)?
Yes, there will be surprises.

What is the model number of your Impreza's OEM HU?

For a 2.0 Premium model in the US, that should be the CM621UB (has built-in BT and USB, no 4.3" screen).

Imprezas and Crosstreks with the CM621UB or the CM631UD (which has a 4.3" screen) will run into these issues:
  • Your car does not have a sat radio antenna. In 2012-2014 Imprezas, only the models that got the Fujitsu Ten navigation got that.

    And since the non-nav CM621UB and CM631UD HU models do not have the ability to add the OEM sat radio tuner accessory, your car probably does not even have the "pre-wired for XM" segment of antenna cable that some earlier models got.

    In other words, you'll need to add an aftermarket XM antenna, plus a small adapter to fit the FAKRA socket on the back of the CV629UM.

    If you want to retrofit the OEM combination AM/FM+XM rooftop antenna, you'll have to also switch out all of the feeder cords to the versions for the models that got the FT nav (or fabricate your own XM antenna cord to run from the OEM combo antenna to the CV629UM). Those run above the roof liner and down the driver's 'A' pillar.
    .
  • The CV629UM's 16-pin aux/mic socket will ground your car's parking brake circuit. You'll need an adapter harness to break that connection (or extract or cut that wire on your car's 16-pin harness).
    .
  • The CV629UM's USB socket is the Toyota style, which the plug on your car's USB harness won't fit. To retain your armrest console USB socket, you would need two adapter cords.
For those last 2 issues, see discussion starting here (post #914 in that thread) through post #921.
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Old 09-08-2016, 06:12 PM   #6
sgsVA
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Thanks for the help. I really appreciate it. First the current unit is the CM621UB. I already have a Sirius rooftop antenna which I used with a Sirius tuner on a previous car; with the FAKRA adapter, I believe that will work. I'd love to use the rooftop OEM but it sounds like a massive chore.

Your reference posts -- specifically 920 -- says the parking brake issue is as easy as cutting the gray wire (#15 pin) on the existing harness. I assume its okay to do that. And the USB adapter also linked in Post 920 looks like the right one but will I find a standard male USB connector behind the dash connecting to my existing HU USB plug? And does that same connector carry signal for the auxiliary input plug in the console?

Again, thanks for the guidance. I'm really happy to hear what I need before I pull the existing unit out. I've been a long-time contributing member of a couple other forums for another of my cars and it's invaluable to find help like this.
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Old 09-08-2016, 07:02 PM   #7
sgsVA
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Back again because the USB adapter in post 920 just doesn't look like it fits the socket in the CV629UM. I can't see four pins in the socket. This adapter on Amazon looks more like it. Am I wrong?

https://www.amazon.com/AXXESS-AX-SUB...+Adapter+SUB-7

I'd attach a photo of the socket but I haven't yet figured out how to do that.
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Old 09-08-2016, 07:03 PM   #8
SVXdc
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Quote:
Originally Posted by sgsVA View Post
...
Your reference posts -- specifically 920 -- says the parking brake issue is as easy as cutting the gray wire (#15 pin) on the existing harness. I assume its okay to do that.
Yes, although it's better if you can extract the terminal from the 16-pin plug (so it would be easier to restore it back to stock, if you ever needed to do that).

Quote:
Originally Posted by sgsVA View Post
And the USB adapter also linked in Post 920 looks like the right one but will I find a standard male USB connector behind the dash connecting to my existing HU USB plug?
No. The top row of this picture shows the USB socket on the rear of the CM621UB; the bottom row shows the plug on your car's USB cord that plugs into the back of the HU:
Hirose type USB connector (2011-2014 WRX/STi, et al.)
The other end of that OEM cord plugs into a proprietary socket on the bottom of the aux+USB pod in your armrest center console.

The top row of this picture shows the USB socket on the rear of the CV629UM:
JAE type USB connector (2015 WRX/STi, et al.)
Read the rest of my post #921. The USB adapter that MackDaddy linked to [CORRECTION: the one that Nebraska03 referenced] is ~3 feet long. Use that only if you want to bypass your car's factory USB socket. You would then need to make the end of that aftermarket USB cord poke out somewhere that you can reach it.

If you want to retain your OEM USB socket, I recommend the two short adapters I show in post #921.

Quote:
Originally Posted by sgsVA View Post
And does that same [USB] connector carry signal for the auxiliary input plug in the console?
No. Aux is via the car's 16-pin aux/mic harness (the same one that has the parking brake signal in your model).

Last edited by SVXdc; 09-10-2016 at 04:48 AM. Reason: corrected references to other thread; added pic showing Toyota-style USB socket
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Old 09-08-2016, 07:15 PM   #9
SVXdc
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Quote:
Originally Posted by sgsVA View Post
Back again because the USB adapter in post 920 just doesn't look like it fits the socket in the CV629UM. I can't see four pins in the socket. This adapter on Amazon looks more like it. Am I wrong?

[link to AX-SUBUSB adapter]
No, [the AX-SUBUSB] would fit the end of your car's factory USB cord. That's similar to the one I show in post #921, except Metra's is about 19" long.

The reverse Toyota USB adapter that I show has the correct plug to fit the back of the CV629UM.

[ADDED: The reverse Toyota USB adapter that Nebraska03 referenced is the same, except it's about 3' long]

You'll connect the two adapters together so they become a Subaru-to-Toyota adapter.

Quote:
Originally Posted by sgsVA View Post
I'd attach a photo of the socket but I haven't yet figured out how to do that.
Free accounts here aren't able to attach pictures or files. You have to use an external image hosting site.

Last edited by SVXdc; 09-08-2016 at 07:43 PM.
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Old 09-08-2016, 07:46 PM   #10
SVXdc
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Sorry, hadn't re-checked the USB adapter that MackDaddy linked to. I just updated both of my previous posts above to clarify.
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Old 09-08-2016, 11:21 PM   #11
sgsVA
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Again, thank you for helping me understand it. No doubt I'll be back with more but you're a great help. And thanks for the explanation of the pix problem. I haven't even looked at costs for the forum yet. Will do that.
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Old 09-09-2016, 08:19 AM   #12
sgsVA
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Hello again. After your last posts I spoke with my son about the steps we need to take to replace the head unit and he indicated he was only using the console's aux input but not the USB (he IS addicted to -- and paying for -- the XM, however). With that information and your identification of the USB fix as an under-console fix, it would seem that I only need the FAKRA adapter and a modification of the 16-pin plug to proceed with the installation. (A schematic of the 16-pin plug to identify the right pin to disable would be helpful if it's handy, thank you.) But before we do that I'm obligated once again to ask if there are more surprises ahead. It's a variation on the "measure twice, cut once" wisdom I was never smart enough to follow earlier in life. Thanks.
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Old 09-10-2016, 04:39 AM   #13
SVXdc
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Quote:
Originally Posted by sgsVA View Post
my son ... indicated he was only using the console's aux input but not the USB (he IS addicted to -- and paying for -- the XM, however). With that information and your identification of the USB fix as an under-console fix ...
I think you've misunderstood what I wrote.

The two short USB adapter cords pictured in my post #921 in the other thread go behind the HU. You would simply connect the two together (the USB 'A' male/female ends), and insert the pair between your Impreza's factory USB plug and the CV629UM HU's USB socket.

You would install those at the same time you install the CV629UM. Very easy. You wouldn't need to open up anything else between the HU and the armrest center console.

I suspect that in the time you have this car, you'll run into a reason you wish you had the factory USB port working. Better to take care of it while you're installing the WRX/STi HU.

Quote:
Originally Posted by sgsVA View Post
... it would seem that I only need the FAKRA adapter and a modification of the 16-pin plug to proceed with the installation. (A schematic of the 16-pin plug to identify the right pin to disable would be helpful if it's handy, thank you.)
Rear of Impreza 16-pin aux plug, showing pin number layout:
Parking brake signal is the gray wire at pin #15. Extraction instructions.

Quote:
Originally Posted by sgsVA View Post
But before we do that I'm obligated once again to ask if there are more surprises ahead.
Only thing that I can foresee you running into is unexpected problems while installing the aftermarket sat radio antenna. You would need to ask other Impreza owners who have done that.
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Old 09-10-2016, 09:09 AM   #14
sgsVA
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You're correct; I did misunderstand the location of the USB adapters. Thank you again. And for the harness diagram and extraction instructions. I also agree with the value of retaining the USB port for unforeseen uses. I hadn't abandoned the task, only intended to defer to a point in the future. As for the antenna, that seems pretty basic. It appears that Sirius and XM signals use the same antenna (especially after their merger), but we'll test it before reassembly.

Again, thank you for your help. Now if you'd like to visit lovely Northern Virginia, we'll wait for your personal oversight... Thanks.
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Old 09-15-2016, 12:44 AM   #15
sgsVA
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Final post (unless I can help the next guy with my lessons).

First of all, the new unit is in and working like a charm. Admittedly, it's an OEM head unit and something better would almost certainly deliver better sound quality but for now it adds the XM my son was missing with his new (to him) Impreza.

Thanks to many instructions from You Tube and this forum, the frustrations and skinned knuckles were at a minimum. There WERE frustrations and it took longer than we wanted but all worked out. The one frustration was connecting a standard SiriusXM magnetic antenna. Although the antenna plug and head unit socket matched without an adapter, it seems all the antennas have angled plugs which just can't reach the head unit socket. Find an antenna with a straight plug if possible. We settled it with a spliced wire.

Finally, my sincere thanks to SVXdc for his guidance and help. Without that, we'd still be wondering why we ever started this project or paying some kid a couple hundred to scuff up the interior. Instead we had a dad/son event and a sense of accomplishment...basic as it may be in the world of real audio...that we'll remember. SVXdc represents exactly the best of what these forums can do: help. My appreciation is extended. Thanks again.
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