[Expansion harness wiring help needed]

Ah I gotcha now. I didn't realize I could do that, I'll have to look up a connector pinout and see which ones can be used without causing further issues haha. Hacking into the factory harness worries me, but I'll do my research and see where I can pin it to in order to get a reading. Do you have any pointers on that? Not sure how versed you are in S Chassis specific stuff but any pointers would be appreciated .

 

Edit: a quick Google search is showing me I can use AN 4 from the MAF plug or AN 1 from the 02 sensor plug. I'll try to figure out which wires these are at the engine bay plug side, should make it easier than running a wire back to the ecu.

Edit 2: I've found the pinout for my ecu in PClink, this should make it far less confusing. I'll double check continuity to make sure I have the right wires but looks like ill be able to use AN Volt 2 fairly easily.

[Expansion harness wiring help needed]

So the only way to run 2 pressure sensors is going to be to get a second expansion harness to use the other plug in as well? Is there any other input in the one shown I can use for the second sensor or am I outta luck there? I really don't want to buy and install a second harness for 1 wire. I'm not seeing where these AN 1, 2 and 4 inputs are, unless it's on the other plug. I didn't take a photo far enough away to see the other plug.

[Expansion harness wiring help needed]

Okay thanks for that help, now looking at the photo of mine, it only has one Volt input that I see, am I missing something here? Where can I wire my fuel and oil inputs to?

Am I okay to wire 3 sensors to the signal ground in parallel, and 2 sensors to 5v+ in parallel?

Found this photo online that may be more accurate? But it's only confused me further as I don't have any pins that don't seem to be able to accept an input. Unless this is S13 only as it says CA in the header

[Expansion harness wiring help needed]

Hey new here, I've got a Link PNP I'm wiring into an S14 Silvia with a built SR20 and I can't find proper info on wiring my sensors in. I'll copy and paste my email to my dealer here, I have not heard back from them yet:

I have an oil pressure sensor, Fuel pressure sensor, and IAT sensor, as well as the CAN Lambda sensor. My drawing from a year ago shows 

S Ground - shared by FP, and OP sensor

+5V - shared by FP, OP and IAT sensors 

Volt 5 - oil pressure

Volt 6 - Fuel pressure

Temp 3 - From IAT

-Does this look about right?

-Am I okay the wire all 3 sensors to the same 5V in parallel?

-Am I okay to use the same Ground wire to all 3 sensors in parallel?

-I have to check the manuals, it probably would answer my question but I want 5v to IAT and then the other side to Temp 3 right?

 

And Could you show or explain the proper way I should be wiring in a terminating resistor into my CAN Lambda circuit?

 

So that was the email. Now after reading in the link software I see I'm wrong on the IAT sensor and need to wire it to Temp 3 and ground correct? I'm having a really hard time finding any definite information on the actual wiring of sensors. I live quite far up north and just towing it to the tuner and letting them deal with it is not a viable option so I've gotta figure this out.

 

Edit, I'll add some photos as well, I don't see 2 volt inputs on the board like in the diagram so that's got me a little confused