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Old 06-06-2017, 04:49 PM   #1
ElongatedTaco
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Default 2006 sti seat swap into wrx

Hi, I couldn't find any direct info on this procedure specific to my year. Tomorrow I'm installing a near complete 2006 sti blue interior into my 2006 wrx tr. This includes carpets, door panels, and seats. I know any sti piece should fit into a wrx, including seats, but I want to double check seats. The 2006 sti seats (with rails) are heated with the button on the side. Will these drop into my wrx just fine with no wiring problems?
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Old 06-06-2017, 04:58 PM   #2
Preludicrous
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Aside from the seat heater wiring, yes it's plug and play. Hopefully someone with seat heaters can speak to that specific part. I would imagine the chassis harness is there and you just need to find it. That was the case when I installed my oem foglights, the harness was tucked up behind the bumper and wrapped to keep it clean.
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Old 06-06-2017, 05:00 PM   #3
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Would he need to swap the module from one WRX seats into STI Seats?
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Old 06-06-2017, 06:40 PM   #4
Preludicrous
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What module? If you're referring to the heaters I'm pretty sure it's all inside/attached to the seat.
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Old 06-07-2017, 08:39 AM   #5
JarHarms
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If OPs profile "Vehicle: 2006 Impreza WRX TR" and the complete blue interior 2006 STI seats are USDM then they will essentially plug and play. The passenger detection bladder and module already in the RHS STI seat will plug into his chassis harness as the original seat did. Both seat buckle harnesses will work. The driver position sensor in the LHS STI seat will also plug into his chassis harness as the original seat did. There is a LHS power harness difference between chassis built with factory heated seats and those built without. You're just going to have to see what you have to work with and match together the parts you need from each seat.

If the STI seats are JDM...well there's going to be some differences in sensors, side bags, and rails to deal with. There are some useful threads covering that but none that are comprehensive and up to my standards.

I'm not aware of any 2006MY USDM STI that had factory heated seats. If anything it would be 2006-07 WRX leather seats or 2007 STI Ltd leather seats. So "blue STI interior" and "heated with button on the side" imply to me those are aftermarket installed heated elements. Maybe a dealer installed option...which is still essentially an aftermarket addition. My guess is that these heated elements would require different wire-up than an oem system. The oem system is not a strait forward design, it has some overlapping circuits.
Also I can assure you there is no easter-egg harness for the heated seat system hiding under your carpet.




This is where clear photos of what you are working with helps. People use all sorts of misleading terms and leave out important facts. (example: Stating "I've got STI seats yo" but then omitting that they are from a non-USDM car). Then the internet tries to make recommendations based off that. Ehh, not so great to add that on top of it being the internet in the first place.
I'd highly recommend taking clear photos of the bottom of both front STI seats that clearly show the electrical connections, harnesses, rails, etc. Only then are you going to get confident recommendations.

Then it is 80% you won't update this thread with any info/photos to help out someone later searching for the same thing.

Last edited by JarHarms; 06-07-2017 at 08:59 AM.
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Old 06-07-2017, 04:36 PM   #6
ElongatedTaco
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Thank you for the info. I'll go take in depth photos in a bit, but for now, here's a quick pic of them.
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Old 06-07-2017, 08:00 PM   #7
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The first set of photos is the drivers side (left) and the second set is the passenger side (right). Both have some harness that appears to be cut and one connecter.

Driver (face down)


Passenger (on its back)
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Old 06-08-2017, 05:44 PM   #8
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Quote:
Originally Posted by JarHarms View Post
I'm not aware of any 2006MY USDM STI that had factory heated seats. If anything it would be 2006-07 WRX leather seats or 2007 STI Ltd leather seats. So "blue STI interior" and "heated with button on the side" imply to me those are aftermarket installed heated elements. Maybe a dealer installed option...which is still essentially an aftermarket addition. My guess is that these heated elements would require different wire-up than an oem system. The oem system is not a strait forward design, it has some overlapping circuits.
Also I can assure you there is no easter-egg harness for the heated seat system hiding under your carpet.
Good to know. As for the dealer installed option I was under the impression that it was the same parts that would've been installed at the factory. Looking at OP's pics that definitely is not the case with his seats (assuming those heaters were dealer installed).
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Old 06-08-2017, 05:52 PM   #9
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Ask the question differently? Did the 2006 WRX STI come equipped with heated seats? I believe that the answer is no.

If a 2006 Impreza did not come equipped with heated seats, then only half of the electrical components are in place.

There is an open relay slot and fuse slot for the heated seats behind the driver's lower dash cover within the relay-block, and a large 12-gauge wire with a blue coating that goes from this relay slot over to the passenger side lower kick-panel area and terminates there (it is part of the OEM harness). You would have to add the relay, fuse and wiring from this termination point to under the seats.

If the heaters are in fact a dealer option, then the rest of the electrical/electronic components should be a direct plug-in.

Two switches fed by a new power-line from the termination point at the passenger's side kick-panel, and you can ground each seat heater element separately.

Last edited by Big-E; 06-09-2017 at 08:10 AM.
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Old 06-09-2017, 08:07 AM   #10
JarHarms
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Got to love 2006-07 Subaru and all the extra junk to deal with for seats right?

Interesting photos, those do help out. The buckle, driver position, side bags, and passenger detection parts are all there and will match up the harness connectors already in your TR. Those taped together oem plugs that are cut off will be removed and your car's matching plugs will connect to the seat plugs on the seat rails. *Hang onto those unused plugs in case you ever damage one...then a replacement is handy.

It is certainly a non-factory heated system but it's installed neatly and in a way that could pass as oem. Aside from the butt splice I see on those supply pigtails...it's not a hack job. The heated system pwr/gnd supply plug (black 2way) is non-oem but it looks like they sent the mating plugs for that (tied to the slide bar). Since that system has its own switches, (as noted) you just need to supply a properly current capable circuit for pwr/gnd to those plugs. Replicate the oem system from the fuse box, through relay, and with proper fusing. No need to replicate the odd (I think) oem switch wiring since you already have switches.

Seats look to be in great conditions as well. Good find and good luck with your project. Please update us once you get those installed and working.

Last edited by JarHarms; 06-09-2017 at 08:15 AM.
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Old 07-19-2017, 12:06 PM   #11
jhullmusic
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*Newbie*
I'm looking to put leather seats in my 2013 5dr wrx (not STI). Does anyone know what seats i'd be able to swap with? STI, sedan/5dr, wrx, Year, etc.?? Thank you all for help to this newb!
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Old 07-20-2017, 02:05 PM   #12
Preludicrous
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2008-2014 WRX or STi seats should bolt right in. I'm not sure about any wiring differences though. You'd have better luck searching for threads pertaining to your generation.
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