Originally Posted by aknovaman

Your 05 harness is a drive by wire harness and the connector goes to the throttle actuator module located on thw firewall above the gas pedal on the firewall side. You need the matching TACC module and a gas pedal.

Go here for drive by wire details:

www.chevythunder.com

Info you are looking for is at the very bottom of web page.

Obviously you PCM file needs set up correctly for DBW.

Originally Posted by gjohnson

Hey Joe, how was your trip? Thanks for the post, apparently that is my Tac Module plug. So, I guess I need to leave that one intact right? Oh, and apparently that junkyard that I bought my PCM and pedal from didn't send me the TAC module. Which from what I understand I have to have since I'm DBW.

Originally Posted by jmauld

Okay, so I'm working on the wiring now. Since I've gained a lot of knowledge from you guys (and I have plenty of questions left), I thought that I could give something back by documenting this as I go, and hopefully making it easier for those in the future.

I used a combination of the FSM and this document to do what I've done so far.



The items below that are in black, I have left in my connector for later use.
The items in red have been removed.
Items in Green, I am still undecided on, so please give feedback if you can.

- 1-black/red, ignition lead to injectors, coil
- 2- EMPTY
- 3-blue/red, rear defogger/electrical load signal
- 4-pink, washer switch
- 5-light green, ignition lead to wiper motor
- 6-light green/black, wiper motor high
- 7-light green/red, wiper motor low
- 8-brown, wiper off/int switch
- 9- EMPTY
- 10-black/yellow, fuel pump signal to F23, IACV-IAA
- 11-black/pink, fuel pump relay signal
- 12-orange, headlamp diode According to the schematic this is used by the ECM for a malfunction indicator?
- 13- EMPTY
- 14- EMPTY
- 15-purple/white, P/S oil pressure switch
- 16-yellow/black, AC switch
- 17-red, battery lead to ECCS relay I believe this wire and the associated relay can be removed?
- 18-brown, igniton lead to O2 sensors, EGRC solenoid, EVAP purge/vent solenoids, IACV, TPS
- 19- EMPTY
- 20-red, GST port (Can these be used to connect the OBDII port to the GM ECU?)
- 21-yellow, GST port
- 22-green, CONSULT port
- 23-green/white, CONSULT port
- 24-yellow/green, VSS signal
- 25-orange/blue, cooling fan high signal
- 26-yellow/red, tachometer
- 27-blue/yellow, wiper intermittent switch
- 28-yellow, temp gauge sending wire
- 29-black/white, ambient air temperature switch
- 30-orange, MIL lamp
- 31-blue/white, ASCD actuator power
- 32-blue, ASCD air valve
- 33-yellow/blue, 5th gear position switch
- 34-orange, start signal
- 35- EMPTY
- 36- EMPTY
- 37-orange/blue, recirculation relay
- 38-green/black, CONSULT port
- 39- EMPTY
- 40-green/orange, neutral position switch
- 41-blue/green, cooling fan low signal
- 42-purple, wiper variable intermittent switch
- 43-black/pink, triple pressure switch signal (leave for AC)?
- 44-blue/red, IACV-FICD signal
- 45-orange/black, triple pressure switch line
- 46-orange/blue, AC thermo control amp
- 47-green/yellow, ASCD release valve
- 48-blue/black, ASCD vacuum motor

Any of the AC leads can be removed if you are not retaining AC. Some of them may be removed anyway, but I am not planning on doing the AC until next year, so I am leaving the wires for now.

There is an additional plug for the ABS.
In this plug, there are three green wires that communication to the Nissan ECM. I'm told that these can be removed. There is also a wire that connects to pin 24 of the F3 plug. The VSS lead. This should stay connected to the ABS harness and connected with the F3 plug to the output of the Dakota Digital converter box.


*Disclaimer, my info is specific to the S14, your wiring may be different.

Once I start integrating this into the GM Harness, I'll add that information as well.