Excision

does anyone know if there is or what color the wire is on the throttle body for the rpm/tach.
im in the process of installing a nitrous kit and thats the last step.
i seen where it is on the ecm but would like to tap into the TB wiring harness

One2beH8ed

I would assume signal which will most likely be green.

Joker4096

iTrader: (2)

Did you ever figure this out? I am also looking for both. I'm pretty certain that the TPS voltage wire (VTA) is the green/cream stripe on the TB but i am unsure of the RPM wire that everyone uses. I searched and found that the red/white wire on the ECU on connector A5 number 15 is the Tach signal wire. Is this correct?

bkuhl

Throttle Body Assembly
- Pin 1 --> black wire to ECM pin 6 (M-) [Shielded]
- Pin 2 --> white wire to ECM pin 7 (M+) [Shielded]
- Pin 3 --> white wire to ECM pin 35 (ETA)
- Pin 4 --> light blue wire to ECM pin 27 (VTA2)
- Pin 5 --> red wire to ECM pin 34 (VCTA)
- Pin 6 --> green/yellow wire to ECM pin 26 (VTA)

Joker4096

iTrader: (2)

Thank you for the info. Do you know if my tachometer wire assumption is correct?

bkuhl

Yes, pin 15 on the A5 connector is a red/white wire and is labeled (TACH).

that wire goes to Junction Connector A29 Pin 17

bkuhl

I'm not great with electronics/electrical. these are just what the diagrams say.

Joker4096

iTrader: (2)

Any Idea where this connector is located on the car? Junction A29

thank you for all of your help.

Excision

for those wondering its the GREEN/YELLOW wire on the throttle body wiring harness.
i ended up figureing it out myself. thanks to those that posted