Automatic dual climate control harness
 

Hi everyone,
I'm planning on doing a retrofit auto climate control from a BRZ Limited to a FRS. I have most of the parts except for the harness. I know there was a vendor (advanced industries) selling a harness. However, it appears he is no longer a vendor. Any idea where I can get this harness? Thanks in advance

Bump. Can anyone tell me where to get the harness for the conversion?

I would go off the assumption it is no longer being sold. I tried to get in contact with him multiple times a couple months back and heard nothing.

Darn... Anyone else feel like figuring this out?

Automatic dual climate control harness
 

There are a few threads scattered around on the forum on this topic, so I wasn't sure where to post this. However, this seemed as good a place as any. There have been multiple people over the last year or so inquiring about the plug and play harness which was made by a former board member (who has since been banned I think, or he left, either way he seems to be gone and all his threads deleted) that allows you to retrofit your manual A/C for the automatic, dual climate A/C. I bought one of those harnesses, but haven't yet done the install (I plan on it soon). However, since nobody has had any luck contacting the guy who originally made these, and seeing as the harness is just sitting here, I figured I would map it out with a volt meter, in case anything ever goes wrong with it. Therefore, I am posting this info as is. I am not responsible for anything you do for your car, I can't guarantee this info is correct, nor that this harness even works (although I'm pretty sure it will, the guy did a really nice job on it). Below are some scans of figures I drew by hand, and they are kind of messy, so I apologize for that, but it was the best I could do.


Let me just say first, the guy who figured this out did an awesome job, and is a genius. And the harness is really nice quality. If you are interested in doing the retrofit, step 1 should be to track this guy down. If you can't find him, the info below may be helpful.


Ok, so here is the harness:


http://u.cubeupload.com/Chaetagnath/...884401B034.jpg
and here is a schematic of the thing:

http://u.cubeupload.com/Chaetagnath/Harnessdiagram.jpg

You will see I have numbered connectors 1-15, fairly arbitrarily. The two main connectors are number 1 (16 pin) and number 6 (24 pin), these plug into the control board, the rest plug into various A/C components. Also, I included the lengths (in inches) of the various wires from either the #1 connector (connectors 2-4, 14, 15) and from the #6 connector (connectors 7-12). There is also a wire which connects #6 and # 24, and a short wire connecting #4 and 5, and a short wire connecting # 12 and 13.

Below is the pin map which shows the connections. I tried to lay them out in the manner they are in the BRZ wiring diagram
(http://www.ft86club.com/files/BRZwiringi.pdf A/C starts on page 342). Female connector pins are numbered from left to right as you are looking at the front of the connector. Male are numbered from right to left as you are looking at the connector. If a pin is circled, it means it is used, if not it is empty. The little arrow then points to the corresponding pin in this format: connector # (pin #). So for example, 3(5) would mean connector number 3 PIN number 5. The connector numbers are based on my arbitrary numbering system above. A few pins are connected to multiple places. For example, pin 6 of connector 6 controls 7(1), 8(1), 9(3), 10(2), and 11(2).


http://u.cubeupload.com/Chaetagnath/PinMap3.jpg

Edit: updated 7/25, had a minor error in the layout of connector 2
Updated again 9/12/15, errors in connector 5, 6, and 9. I've cross referenced this with the BRZ wiring diagram, so it should all be correct now

Finally, below is a list of part numbers for the connectors which I think are correct, based on their shapes. What you do with this info is up to you and I don’t guarantee anything.



http://u.cubeupload.com/Chaetagnath/pinlayout2.png
Connector #14 is a 5 pin socket relay which connects to the blue blower motor relay. Basically, the point of this thing is to reroute pin number 2 to pin 8 of connector #1. The middle pin of the relay is no longer used, and the remaining 3 plug into where they did before.


http://u.cubeupload.com/Chaetagnath/...9A4C7D8DD0.jpg
http://u.cubeupload.com/Chaetagnath/...684E069BCA.jpg

# 15 is a long wire which must pas through the firewall and replace the # 1 pin (yellow black wire) of connector A7 (see the BRZ wiring diagram). Then the pin which was pulled out of A7 connects to the male pin on the harness.



http://u.cubeupload.com/Chaetagnath/...884401B034.jpg


Feel free to PM me with any questions. When I finally do this install, I will try to put together a DIY, but its super freaking hot out, so it’s unlikely I will do it anytime soon.

i'm actually the first person that purchased the harness from him. i did the install not long after i got it. the only weird thing for me is that the air pushes through the footwell even if i don't want it to, but that's not a huge deal.

he did have a second harness planned to be just for single control, but i'm not sure what came of that. honestly i would recommend people go for the single control because going for the dual control is a lot more involved. you have to completely replace the part that controls the air flow because there is an extra denso unit as well as plastic pieces to separate the airflow. really it's all kind of messy and i'm starting to think maybe i screwed something up in there which is why i get air coming to the footwell...

anyway. it does do what it's designed to do and i have the dual climate in my car and working. the entire dash MUST be removed if you're doing the dual climate since you'll have to swap the pieces. it's a huge PITA. you'll also need to refill your a/c. i was told that i should be able to do it without having the refill the a/c, but i couldn't see any possible way to remove what i needed to without disconnecting the a/c lines leading to the cabin from the engine.

i mean i'm glad i did it, but if i were to do it again, i'd do just the single control harness.

Would love to get more info on this...Especially the simpler single temp control harness

The only thing left in my FRS that I absolutely hate is that circa 90s corolla HVAC panel -- need to get it the hell outta there

Thanks for the info.

I am sure someone could come up with something simpler ... Right?

Automatic dual climate control harness
 

Doing the single temp conversion should be easier. You would also gain the auto function in addition to the better controls. It can be done without replacing the HVAC itself with the harness that I reference above. So single temp or dual you need to buy or build a harness. For the single temp, you just wouldn't use connector number 9. EDIT: I have done the single temp install now, and I have added to this post to expand on how to do it. I am not responsible for anything you do to your car, and I do not guarantee any of this is correct. So, that said, I believe you would need the following parts (with subaru part numbers) in addition to the harness:

Driver side temp control servo: SU003-02045
Damper control servo: SU003-02044
Screws for the servos (need 5 total) SU003-02113
Blower transistor (73533AJ000)
the climate control panel: 72311CA061
temperature sensor: 73730CA020
the hose assembly for the temperature sensor: 72313CA010


NOTE: Always be sure to disconnect the battery before doing anything like this. In particular you need to disconnect an airbag, which its best to have power off before doing so. Also, it is very easy to fry something accidentally.


The manual A/C blower assembly and the automatic dual A/C blower assembly share many of the same parts, but have a couple of important differences.

Temp and Direction (foot, def, face) are controlled by cables in the manual version, and controlled by servos in the auto A/C.

Manual:
http://u.cubeupload.com/Chaetagnath/...DF4668B41F.jpg

Auto:

http://u.cubeupload.com/Chaetagnath/...694EEF854B.jpg

Thus, as far as I know, the auto/dual control panel cannot control the cables (which are moved by the dials on the manual one). So you need to replace them with the right servos. The driver side temp servo will fit on the manual A/C, and the direction damper servo should also fit (I haven't actually tried, but it looks like all the screw holes and pegs are there). The passenger side temp servo will not fit on the manual A/C though, which is why for true dual temperature, the top housing of the a/c unit must be replaced, requiring removal of the entire dash.

But....for single temp, it is possible to add the driver side temp servo, remove the manual cable (which is on the passenger side), and because there is only 1 gear going across (or they are connected somehow), the driver side servo is able to move the temp just fine.

As you can see in the picture below, the gear is there already, just add servo:

http://u.cubeupload.com/Chaetagnath/...4A4687B28A.jpg

http://u.cubeupload.com/Chaetagnath/...5745EE9826.jpg

http://u.cubeupload.com/Chaetagnath/...09434B80D5.jpg

The gear on the servo has a tooth which is larger than the others. It should fit into the larger space on the A/C gear.

As for the direction damper, you need to remove the manual cable, unscrew the white plastic gear thingy on the manual A/C (the larger round white gear on the top in the picture below)

http://u.cubeupload.com/Chaetagnath/...4C4D79AA4C.jpg


Unfortunately, it is a really tight space. So, first you will need to remove the dash. This itself isn't so difficult. When pulling interior pieces out, I like to have blankets to place everything on outside of the car to avoid scratches.

1. First, remove the center console and center knee pads. There are plenty of threads elsewhere which show how to do this.

2. Remove the lower dash panels driver side first, then passenger side. This isn't too difficult either, and there are threads elsewhere which show you how to do this. However, a couple of screws are tricky because they are on the inside and face the other way. See the photos below:

http://u.cubeupload.com/Chaetagnath/...74420EB48E.jpg

and on the driver's side:

http://u.cubeupload.com/Chaetagnath/...D24DAE975C.jpg

3. Remove the A-pillars from both sides.

4. Remove the front dash speaker covers. This is important because there are two screws under there which need to be removed. One is a large black screw, the other a regular dash screw.
http://u.cubeupload.com/Chaetagnath/...5D4C578450.jpg
http://u.cubeupload.com/Chaetagnath/...A54A80BED2.jpg

5. Remove panel above the steering wheel and the speedo panel. I believe there is a youtube video somewhere of somebody doing this. There is a screw behind this which needs to come out.

6. On the passenger side, if you look under where the glove box was, there is an airbag up there bolted to the dash. Unplug it, and unbolt it from big metal thingies.

7. Remove the radio, and the decorative dash panels. There is at least 1 screw back there

8. Be sure you have all the screws and bolts out in the front which hold the dash in place. You will also need to unhook the harnesses for the small speakers on either side. If all the bolts are out, it should slide out fairly easily. If it is not moving, you likely forgot a screw. I found it easiest to lift it over the steering wheel and pull it out through the passenger side door.

Ok, it should now look something like this:

http://u.cubeupload.com/Chaetagnath/...394595B5F9.jpg

To do the true dual swap, you would need to remove that big metal bar as well, which I believe also involves removing the steering column somehow. Maybe I will do that someday, but not today.

Ok, All of that needed to be done to install the damper servo (you will need some small screw drivers, or angled socket wrenches or something, it is a tight fit. I used this [ame="http://www.amazon.com/Neiko-03044A-Ratcheting-Screwdriver-Close-Quarters/dp/B000XYOUS6/ref=sr_1_3?s=hi&ie=UTF8&qid=1439057204&sr=1-3&keywords=small+socket+wrench"]Neiko 03044A Mini Ratcheting Screwdriver and Bit Set, Pocket Size Close-Quarters, 1/4-Inch Drive - Angle Screwdriver - Amazon.com[/ame]).

http://u.cubeupload.com/Chaetagnath/...BA43318BBF.jpg

There are three screws. You can see one in the picture above, there is one underneath, and another on the other side. I was actually only able to get two front one and the bottom one, I could not get to the third. However, it seems to work, so if it is mounted properly, and the pegs are in the grooves properly, two screws will work. There are little pegs attached to arms that move the dampers, they fit into these grooved pathways on the white thing attached to the servo. With the dash out, I loosely put the two screws in, then guided the pegs into the proper grooves, held it in palce and tightened the screws. Then I plugged in the harness (see below) and the control panel and tested everything to be sure it was working (have to reconnect the battery). Better to check now, than put it together and find a problem. The defrost should come out the vent closest to the windshield. Front and side air come through the bigger vent in front. Footwells you should be able to feel coming out the bottom. Just cycle through everything and feel where the air is coming out. Also, test the temperature servo.

Harness install:

You need to swap out the manual blower resistor for the auto one. Just a couple of screws. It is located below the controls mentioned above.

Manual one needs to come out:

http://u.cubeupload.com/Chaetagnath/...864C84B52E.jpgHere is what the automatic one looks like:

http://u.cubeupload.com/Chaetagnath/...2E473C9F7A.jpg
http://u.cubeupload.com/Chaetagnath/...DA452BAA29.jpg


Then attach the temperature sensor tube next to the driver side servo. Add the temperature sensor to the end.

The connector on the manual A/C is there, but is closed off:

http://u.cubeupload.com/Chaetagnath/...1D4A728D4E.jpg
The inside of that should be a hole. This is what the auto looks like.


http://u.cubeupload.com/Chaetagnath/...3E4B34B281.jpg

I dremmeled it out. A small pointy hand saw would work too. Its an awkward angle.

http://u.cubeupload.com/Chaetagnath/...A74CBF9E9E.jpg

Then you simply need to plug in the harness everywhere. Should work. Also, I can confirm that the auto function works. The table in my earlier post has been modified to tell you where everything needs to be connected. Boom, single temp, auto A/C, nicer panel.

http://u.cubeupload.com/Chaetagnath/...AA47469238.jpg

Dude..awesome write up

Now all I need is that damn harness... Need to find someone that can make them- unless you want to sell me yours???

LOL, nope, think I will hang onto mine.

Not even if I throw in some TRD shoulder pads to make every drive a little more comfortable for you? Haha let me know if you ever change your mind!

In the meantime, we need to get someone who can figure out how to make these... I looked into my PMs from when I was talking to the guy who originally made this harness (accelerated was his forum name)

Found his YouTube video..
[ame="https://www.youtube.com/watch?v=16CeY-ev7og"]https://www.youtube.com/watch?v=16CeY-ev7og[/ame]

So his name is Rudy Compart

We need to either track this guy down or find someone who can make a similar harness..

keep in mind one of the biggest hurdles is to find the connectors at reasonable prices. when i spoke to rudy he explained that's really why he had to sell the harness for how much he listed it for. cause he had to buy a ton of connectors at bulk prices. at least that's what he said.

Yeah that makes sense...but based on how many people want this damn harness I'm sure we could make that happen

Regardless - first is to find someone with the knowledge to build this thing. We can deal with that issue after that's taken care of...First things first haha

They can all be purchased individually. The 7 pin ones, which have the part number starting with IL were really hard to track down, and those may be the ones he had to buy in bulk (they only sell them in 500 units from alibaba). However, I found them from www.digikey.com for less than a buck each, and they appear to sell individually. Also they have the corresponding pins as well. Some of the toyota number connector have knockoffs that can be purchased from Japan. Either, was you are probably looking at 50-60 bucks for the connectors. Also you need to buy all the appropriate pins, and wire. So, 100 bucks would be a reasonable supply cost.

yeah. that doesn't seem too bad. now it's just a matter of finding someone to either front the money and/or to make the thing itself. should/could be pretty easy to make once all the parts are gathered thanks to your thorough diagrams. i'm surprised no other vendor is trying to make/sell these. i think if the harness cost 250-400 then it would have been a lot more palatable for people than what rudy had priced it at.

I can't believe there aren't more electrical guys on here that can make this harness...Maybe I should start asking around my work

found his profile from Linkedin, but don't know how to get in touch with him, really interested in simple single zone conversion, our ride is too small for dual zone control to be useful.

https://www.linkedin.com/pub/rudy-compart/7/b3a/b20

I'll buy a harness if someone will make it. These wiring diagrams make my head hurt...

Glad to see more and more people trying to figure this out. I have had my harness built since late last year, but i really don't want to remove the factory manual hvac box.

Looking at the pictures and comparing them to my auto hvac box, one thing is apparent. You can only add the driver side servo to the manual HVAC box. The passenger side is missing 2 mounting posts, and the gear is different. So if you want the true Dual Zone CC, you need to swap boxes.

As far as building you own harness, I can help with sourcing some of the plugs. I started out with a Limited dash harness. You can completely separate the HVAC wiring from the harness. One important thing to note is that the rear window defroster is controlled by the CAN system in Auto HVAC cars. There are also power/ground and illumination wires that you can find in the junction plugs in the stock harness to save you a little more headache (im going for as close to factory as possible and minimizing cuts in the car).

Two of the servo plugs can be found in 01-03 Honda Civic's HVAC wiring. It will come with 3 green 7 pin plugs. One you will use for the driver side temp servo. The other for the Fresh/Recirc servo. You can use the one in the car, but you will need to cut and splice in two wires from the Auto HVAC harness.

The 5 pin face/feet servo plug I found on a Lexus auto light sensor harness, but if you find the 01-03 Civic, im sure you can find one in there. It seems to be a pretty common plug in both toyotas and hondas.

The blower resistor plug I found on a Honda Odyssey, but you can also find it on a 98-02 Accord(not sure about this one, but the blower resistor looks the same).

The driver side evaporator temp sensor plug can be cut from the manual harness and spliced into the auto harness.

The cabin sensor has a small harness attached to the tube, so I would cut and solder to that. If you have the dash harness, this plug is included.

I hope this will help some of those who want to try and build their own harness.

That was quite the first post! Thanks for the info.

Would you be willing to sell me your harness since it sounds like you won't be doing the install? I could give it to my electrical engineering buddy so he can reverse-engineer

That'd be awesome if your buddy could make more. :bellyroll:

Yeah I'm an engineer for Toyota so positive one of my coworkers will be able to do it...I just need a harness for them to see

Here's to hoping someone is willing to part with theirs for the greater cause!

Thanks! Yeah I've been a lurker for a while. I'm still using the harness, I'm just going to modify it a little for the single control.

You'll want Chaetagnath's harness because it uses plugs that mine doesn't. The 8 pin plug for the manual harness (plug 2 on his diagram), and plug 3 for the D29 option connector behind the radio. Plus the conversion plugs for the blower resistor. These plugs make it way more plug and play then mine. Those will be the harder plugs to find but the junkyard is a magical place...

I am feeling hopeful that this is going someplace....

Ah my bad thought you had the same one that he has - thx anyway

My main concern is that we have a lot of support for it now until it's time to pony up the $$... I remember accelerated talking to me about his harness saying he wasn't getting the orders he needed (I think he was trying to get 10 firmed up?) to buy stuff in bulk and make it cost effective

Doesn't mean I still won't try!

From what I remember the harness alone costed around $1000, plus the other components for the single/dual temp to work.

I remember around $400. I wouldn't have been interested at the point it went over $600. Total price was upwards of $1000 because of the dual climate control panel costing close to that.

Edit: I was able to find a small segment of the thread. He was charging $450 for the harness.

I found the full thread cached on google somewhere. I can't seem to find where it was though. I also have it saved to my computer somewhere. I just need to find it.
The thread Title is "Automatic Climate Controller for Manual HVAC". He was banned for not being a site sponsor and the thread later deleted.

As an update, I installed my harness going the single temp route that I wrote about in an earlier post. It worked perfectly, but was a little more difficult than I thought. You still need to remove the dash, but you don't have to remove as much as you would to do the full dual temp install. I'll try to write a but more about it this weekend.

the dual climate control panel cost around $200 in eBay these days, i'm ready for the single zone mod if harness can be purchase again.;)

Yeah I have a PM from him stating the entire package (harness + OEM parts) would come in around $1300 so that harness price point seems right

Please do

For the single temp conversion, the rest of the parts (servos and such) through amayama.com and some other sites, comes to about $200. The control panel is 360 or so new, and then you would need the harness. If you make it yourself can be had for 100 in parts, otherwise probably looking at a couple hundred to pay someone to do it. So, the single temp conversion should be doable for under 900.

I have updated my earlier post with new pictures and instructions on how I did the single temp http://www.ft86club.com/forums/showp...16&postcount=9.

One other thought occurred to me. If someone can figure out a way to control the cables which control the temperature and air flow direction on the manual A/C with the servos from the auto A/C, then you wouldn't need to take the dash out or any of that. The guy who built the harnesses originally said he was working on a product which would be plug and play single temp, but he never posted a followup (or got banned before he was ready to sell it).

I'm definitely interested in one.. If no one makes one my electrical buddy and I can attempt it.. But I would rather just buy one lol

"If you build it...They will come"

just curious... if i were to be able to make one and get it fully functional and PnP.. how many would be interested in getting one?

i just want the look of the BRZ. Is it possible to somehow install the HVAC controls and have it behave the same way as a stock FRS. I don't need the dual climate system, just the look is all i want.

From what I understand, the two systems operate differently. While the FRS's controls are more manual, the BRZ's controls are electronically controlled. And from what I've read, it seems like making this wire harness is the easiest way to go about it.

i'm interested in single zone, dual is too complicate and not necessary.

So much work, and expense, for so little gain (to me). Kudos for those that are willing to go to these extremes to make you dreams come true.


I'd personally spend the money/effort from this on louvers, for even less gain!