How hard is it to install a JDM digital AC cluster?

[Jeff240sx]

Title says it all.
Is it possible to install a JDM digital ac cluster, or are there wires that you'd need a silvia/sr harness to make work? To me, climate control > colored bars.
-Jeff

[Steeles]

Jeff theres already a thread on this in tech ya know... its a PITA

[UcanTry]

i heard its difficult, however u need the whole wiring harness and the unit, and it can be done, i have a friend who installed it in his s13 and it works

[Ghettokracker71]

How hard? like 2-3hours hard ? or like hiring apro to take 35+ hours hard?

[UcanTry]

umm my friend put his in, in a day but ive never even looked at doing on my car before

[Strider]

My friend also attempted it. He got it done within a day. Woke up started, by the time he finished it was way in the middle of the night. these are the directions he said he followed.
Posted by Float on NICO!!!

I'm sure that anyone who has been on ebay has seen these for our cars. I purchased on in March of this year and it took me a while to get it all working. But mine is now completely functional and looks pretty damn cool. I'm going to try and get the wiring up here later, but I don't have any way to get pics, so I can't help there. Alright, here it goes;
1- Auto A/C control unit(s13 silvia)
2-Complete harnes (s13 silvia)
3-Mode door motor(not sure, came with mine)
4-Sensors
a. In vehicle sensor ( 91 pathfinder, I think, mine came with it)
b. Ambient Temperature sensor (91 pathfinder)
c. Sunload sensor(not sure, mine came with it)
d. Fan control amplifier(93 maxima)
5-Aspirator(93 maxima)
You now have all the neccisary parts. Finding the Sensors here shouldn't be too much of a problem. If nothing else, buy them new from Nissan. The main problem that I have seen with all of the units that are purchased on ebay is that they don't come with the MODE DOOR MOTOR. You HAVE to have this. I don't know that you can get it from another car. I luckily had it with mine when I purchased it. If you are thinking about doing this it is really cool, but will take some ingenuity. If I was going to do it again, I would contact the seller and see if he/she can get these parts also before you purchase it. It may cost more but it will save you A LOT of headache. Now, you may be wondering what half of this stuff is, so I'll explain;
1-Auto A/C Unit- basically it's the computer, the thing you see
2-Complete harness- If it is cut at all, it will be a pain to work with. If you can, try and get one with both sides of the connectors also.
3-Mode door motor-You HAVE to have this. This is what replaces the HOT/COLD slider on your original unit. Even with all the sensors, the unit is useless with out this. VERY IMPORTANT TO GET THIS!!!
4-Sensors
a. In Vehicle Sensor-this, in conjunction with the aspirator (I'll explain in a sec), draws air in past the sensor and tells the control unit what temp it is inside the vehicle.
b. Ambient Temperature Sensor-This is located on the hood rockstay. (bar that runs vertically infront of your radiator/condesor. Look at the car from the front and look into the space in the bumper. You can't miss it.) This sensor tells the control unit what temperature it is outside.
c.Sunload sensor-Kinda self explanitory. This one tells the control unit how much sun is coming into the car.
d.Fan control Amplifier-Based on a signal from the control unit, it varies the resitance going to the fan. Basically this replaces the resistors that were used before. (4 fan speeds-3 resistors.)
5-Aspirator-This unit is located on the going to be attached to the A/C box. You'll have to cut a hole, but nothing complicated. Basically this uses the venturi effect. It uses the air being blown out of the fan to create a vaccum that draws cabin temperature air past the in vehicle sensor.
As for the wiring goes, I'll have to explain this later. I'm going to try and get pics up of this, but it is raining right now, and I don't wanna mess with it.
If you have any questions, feel free to post here, or email me.

[Strider]

And here is how he said to Wire it up. Like i said my friend had a little hard time. But was still able to figure it out.

Again posted by Float on NICO

Alright, here is the wiring. I think that this is all of it, but I'm not for absolutely sure. All of the wires that I'm referring to are the wires that are on the sub-harness that should come with the auto a/c amp. If you were lucky like me you got both sides of all of the plugs, so I just did the splicing on the plugs and didn't cut the harness at all. Ok, so on with it;

You will have 3 positive wires entering the unit. This is just to get it to turn on. One is a constant, and the other two are ignition. And just incase you think of this (like I did) you don't want it to come on in the Acc. position. (i.e., hook one pos. wire to an acc. wire) The reason for this is because the relay for the fan isn't closed until the key is turned to ON.

All 3 sensors share a common ground. Going out of the harness there is a pos. and a neg. for each sensor. Once it gets into the harness and up to the auto amp. The neg. is one wire.

The illumination dimmer won't function with this unit. I found out they don't have dimmer switches in JDM vehicles, so this wasn't designed to work with it.

There is one wire that I couldn't find a home for. I suspect that it has something to do with the Bi level motor, but our car doesn't have this motor.

NOTE: I will use the same color codes that Nissan does. Know these before reading

Your pos. wires on the sub harness are;
R - constant + - White plug with single wire - used radio constant - R/B
L/R - Ign. + - ran wire to two wire plug for fan power - connect to large L/R wire
G/W - Ign. + - ran wire to small green wire on the fan relay.

Ground
R/Y - This is the only wire that is on the vehicles harness that you will cut. Originally this is the ground for the Ill. Unfortunately it won't work and must be run to a direct ground. I ran a wire to one of the screws that hold down the rubber boot on my shifter. (Great place for to ground stereos too)

Sensors
I'm not 100% sure on the polarity of the wires, it was dark and I couldn't see well, but I think this is right. Hopefully you should have the plugs for the In Vehicle sensor (Large white plug, 2 wires) and the Sunload sensor (Small black plug, 2 wires). You won't have the plug for the ambient temperature sensor because it is located on the hood rock stay on the front of the car. I got my sensor from a 91 pathfinder and cut on the plug side, so now I have a plug also. For the ambient sensor, you will have to get the wires through the firewall somehow and seal them. I cut a small hole in the plug for the ecu to engine wiring and it works well w/o a leak.
Sunload Sensor - (LG/B +) - (G/Y -) - The sunload sensor is a diode and is polarity sensitive. DON'T HOOK THIS UP WRONG.
In Vehicle Sensor - (BR +) - (LG -) - This is a thermistor. I don't believe that it is polarity sensitive, but I'd make sure to hook it up right anyway.
Ambient Temperature Sensor - (LG/Y +) - (LG -) - Same as above.

Engine Temp Sensor
I don't have this hooked up yet. This isn't really so much a sensor as a signal. It takes a signal from the temp sensor that controls the gauge cluster. If the car is really cold and it is really cold outside, it will delay running the fan for up to 150 seconds. After that it will run the fan on low until the car heats up. Its cold enough here right now for this to work, (I think) but like I said, I don't have the wire run yet.
BR/W - Single wire - Will either run to the back of the gauge cluster or out into the engine compartment

That is about it. I got all my info from the online Factory Service Manual from an Australian S14. The wire coloring is different, but the placement of the wires going into the auto amp is exactly the same. Go to zilvia.net and click on the Technical link. It will say S14 SR20DET Factory Service Manuals. You'll need adobe. This will explain ALOT!!!!



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[Yoshi]

wow strider, great info find, this is definitely one for the archives :)
Hopefully all taht info is accurate, and it'll be less of a mystery.

[MugenHonda]

that is for S14, too bad there isn't one for the S13. That one is harder than the S14 for some reason. =(

[NZO]

...search.

[MugenHonda]

...search.

Man STFU. :wackit: Fucking wanker, hope you choke on a bottlecap you redundant fuck.

[240eggsx]

I'll second that... NZO shut the fuck up. Id be willing to bet you have an infeority complex which is aggrivated by the fact you have a small penis. You therefore feel the need to "boss" people around on various internet chatrooms to make yourself feel like a bigger person. Again, shut the fuck up if you dont have anything constructive to add to this thread.

[NZO]

Man zilvia never ceases to amaze me. I swear this has been discussed so many times before...call me whatever names make you feel better but it still doesnt get you any answers.

[kazuo]

I'm gonna have to back up my touge friend on this one...

This shit gets asked like, every other day.

And those "Installation Instructions" have also been posted once or twice.

Use the fucking search button.

[MugenHonda]

Please, why don't you search nazis show me a thread with detailed wiring information and instructions for an S13 install?
If you read my post in the first place I never even asked a question. I simply pointed out that there is a lack of wiring info for the s13.

[Strider]

Yoshi: thanks, it should be accurate like i said my friend used it to complete his.

MugenHonda: Like i said my friend used it on his, though that doesn't mean its not for the s14. Your probably right, for all i know my friend could have just used this as "blueprint" just to get the ball rolling on his project.

Rest: lets not destroy a perfectly good post by arguing.

[Dutchmalmiss]

all i have to say is: IT'S A PITA!