digital climate controller

[xDRFTurR1D3x]

alright guys i have to say this ahead of time i am NOT a newb i frequent 240sxforums frequently i am NOT wanting this to be JDM tyte yo i am simply doing this as a nice show mod i do NOT want to make the climate controller actually control my climate ive relocated my stock climate controller to my glove box all im asking for is a wiring diagram to have the controller come on or as my 5 year old brother says make all the lights and things come one i let him pick this out for my car (it was very important to him ) any help is greatly appreciated yes i did search and swam through the sea of flames and put downs again im not doing this to be on the bandwagon im doing it to content my lil bro thanx again guys

[rim_bender]

http://forums.nicoclub.com/zerothread?id=160285

best i could do

[addikted2bass]

S13 Digital AC: The 1989-1994 240SX in America was equipped with an analog unit that doesnt have too many major differences from the Japanese(and Australian) analog unit. But one major difference between the two analog models is that the USDM heater control is run off of a wire that is attached to the intake door while the Japanese analog has a button on it that says AUTO and the intake door that controls heat is motorized. This makes it extremely easy for you to install the JDM digtal controller onto the CA or SR dash harness if you have the JDM heater core with the motorized intake door motor. (Heres how to do it if you have a JDM harness... http://www.pandablue.com/nissansilv...&PagePosition=1)

Currently it would be easier to hook up the digital ac controller into a 240SX *if* you used a JDM harness since the connectors would line up and not have to be spliced into the KA harness. But that doesnt meant that it cannot be done (however you probably wont be able to use AC). The back of the KA push control (analog) unit has two sets of pinouts for two connectors. The KA has (from what I can remember) 16 pinouts on its larger connection while the smaller connection has 6 (or 7) pinouts. This is different from the Digital AC unit of the S13 and S14. Both digital units have 20 pinouts on their larger connections and 16 on their smaller connections. The only thing that the KA doesnt have is the intake door motor on the JDM heater core, you should already have the mode door motor and air mix door motor (and bi-level door motor on the S14, though i cannot confirm that without an US S14 FSM). So once you acquire the intake door motor you just need to splice alot of wires.

The S13 and S14 have the same amount of connectors and same plug pattern on the back's. (as shown in this thread http://www.240sxforums.com/forums/s...=&threadid=5330) However this does not mean they are interchangeable.

While I said that the S13 digital controller has 20 and 16 pinouts, it does not use all of them. So in actuality there are 18 wires running to the larger connector and 10 running to the smaller connector. I have some excellent color pics of this if anyone wants them, since I have the S13 digital AC and most of the general (180SX) dash and wiring harness sitting around in my garage that I bought from swift drift.

The S14 however has 18 wires running from the large connector and 13 running from the smaller connector. Therefore the two cannot be swapped *unless* the wires are moved around. The only real advantage of having the S14 Digital unit are that it is completely covered in the S14 SR20DET FSM (http://www.silviaaustralia.com/techinfo.asp) and with that manual I was able to write up a pinout of the S14 digital unit with the wire colors and what the actual wires do. I need an S13 w/ digital ac FSM to do the same for the S13.

Now if you want the AC to work then you probably dont stand a chance of getting it running without a front clip from an SR. The S13 and S14 with digital controllers have the following items that are not on USDM 240SX's because they work with the AUTO button primarily:
In vehicle (temp) sensor - (behind the dash near the guage cluster - takes temp for digital display.)
Ambient sensor - (near the hood striker)
Sunload sensor - (photo diode near windshield defroster - Detects sunlight load and adjusts AC accordingly.)

The Point:
1) At the moment AC will not work with the Digital controllers.
2) S13 analog to digital swap is still hard to do since the pinouts on the controller are a mystery to me, but once they are figured out and if someone has the S13 USDM FSM for their car then it really should not be too bad. Just lots of splicing and a JDM heater core or at least the intake motor.
3) The S14 Analog to digital swap is easier since we know what the pinouts are on the back of the S14 controller. All you would need (from what I can tell) are the intake door motor, and bi-level door if USDM 240SX's did not come with it. You will need the proper FSM for your car and can use that for general wire splicing purposes.
4) This is just what I have been able to figure out in a couple weeks of off and on research so do not tell anyone it is "next to impossible" because it can be done. I will admit though that buying the head unit alone will get you prctically nowhere at all you really do need that harness at least for connecting and splicing purposes.

More info from the JDM forum, good pics:

And while I am throwing out useless information here are the pinouts of the S14 digital AC controller:

B=Black
W=White
R=Red
G=Green
L=Blue
Y=Yellow
OR=Orange
P=Pink

Large Connector (Pins 1-20)
1 - R/B - Open/Close Bi-Level Motor
2 - R/Y - Open/Close Bi-Level Motor
3 - G/W - Fresh/Recirculate Intake Door Motor
4 - G/B - Fresh/Recirculate Intake Door Motor
5 - G - Defrost Vent
6 - R/G - Defrost Vent
7 - R - Cold/Hot Air Mix Door
8 - L - Cold/Hot Air Mix Door
9 - L - Fan F/B
10 - L/Y - Fan Out
11 - OR/G - Battery
12 - L/OR - Ignition
13 - R/L - (+)Illumination
14 - B - (-)Illumination
15 - Unused
16 - L/W - (+) Ignition Fan
17 - Y - (from) Water Temp Guage
18 - Unused
19 - Y/B - AC Signal
20 - B - Ground

Small Connector (Pins 21-36)
21 - L - Mode 1 F/O (Face?)
22 - L/R - Mode 3 (Foot)
23 - G/Y - Intake 2
24 - Y - Intake 3
25 - OR/L - In Vehicle Sensor
26 - OR - Sunload Sensor
27 - P/L - PBR
28 - Y/R - Intake 4
29 - B/Y - Sensor Ground
30 - L/W - Mode 2 B/L (Body/Legs?)
31 - L/B - Mode 4 Vent
32 - Y/B Intake 1
33 - P - (+5W) PBR
34 - Unused
35 - Unused
36 - Unused

*Edit* I did make one mistake, the door motor that we need in America off a JDM car is not the intake door motor. We actually need the air mix door motor.

*Another important edit*: The JDM heater core hoses are on the left side of the vehicle while the USDM hoses are on the right side of the car. This means you need a non-USDM heater core that was a LHD vehicle with the digital AC or at least the Air mix door motor. So you cannot use JDM, Australian or any other RHD heater core unless you do one of two things: 1)Drill two holes on the left side of your firewall and use the RHD core (you may have all sorts of clearance issues) or 2) Fabricate a way of using the Air Mix door motor with your USDM core (I prefer this idea myself).

[addikted2bass]

http://i9.photobucket.com/albums/a97/gero704/s14digitalwiringconnectors.jpg