Nitrous Install wiring questions
10-12-2018, 08:50 AM
#1
Burning Brakes
Thread Starter
Nitrous Install wiring questions
The weather is going to be cool and I want to get started on installing my NX plate kit. I have gotten most of my quesitons answered on the physical install, but I have a few questions around wiring.
1. For tapping into my current wiring harness for TPS signal, and RPM tach signal; What is the best way to go about doing that? Use a wiretap or something else?
2. What are the proper wires to use for TPS signal and RPM signal? I will be using a NX Express WIndow Switch.
3. Does anyone have pictures of how they wired up the Corvette Switch panel?
1. For tapping into my current wiring harness for TPS signal, and RPM tach signal; What is the best way to go about doing that? Use a wiretap or something else?
2. What are the proper wires to use for TPS signal and RPM signal? I will be using a NX Express WIndow Switch.
3. Does anyone have pictures of how they wired up the Corvette Switch panel?
Last edited by billy mild; 10-12-2018 at 10:49 AM.
10-12-2018, 09:19 AM
#2
Drifting
I did all my connections in the PCM area. I just soldered in my wires, put a little silicone on them and some tape.
For the tach signal you want pin #10 on the PCM (white wire).
For the TPS signal you want pin #1 on the TAC Modual (dk blue wire). You could also get the TPS signal at the TPS sensor at the T/B, but the TAC Modual is mounted to the PCM so it was easier to get them both there.
I did all my splices at the PCM since it looks cleaner. I think you can also get the tach signal from a coilpak, but nor sure which wire.
If I remember correctly, for the TPS there are two 5v signals a rising and falling. I'm pretty sure I used the rising one. It's been awhile since I messed with it so I may be wrong.
This was on a 2004, not sure if there were any changes with other years.
For the tach signal you want pin #10 on the PCM (white wire).
For the TPS signal you want pin #1 on the TAC Modual (dk blue wire). You could also get the TPS signal at the TPS sensor at the T/B, but the TAC Modual is mounted to the PCM so it was easier to get them both there.
I did all my splices at the PCM since it looks cleaner. I think you can also get the tach signal from a coilpak, but nor sure which wire.
If I remember correctly, for the TPS there are two 5v signals a rising and falling. I'm pretty sure I used the rising one. It's been awhile since I messed with it so I may be wrong.
This was on a 2004, not sure if there were any changes with other years.
10-12-2018, 10:53 AM
#3
Burning Brakes
Thread Starter
I did all my connections in the PCM area. I just soldered in my wires, put a little silicone on them and some tape.
For the tach signal you want pin #10 on the PCM (white wire).
For the TPS signal you want pin #1 on the TAC Modual (dk blue wire). You could also get the TPS signal at the TPS sensor at the T/B, but the TAC Modual is mounted to the PCM so it was easier to get them both there.
I did all my splices at the PCM since it looks cleaner. I think you can also get the tach signal from a coilpak, but nor sure which wire.
If I remember correctly, for the TPS there are two 5v signals a rising and falling. I'm pretty sure I used the rising one. It's been awhile since I messed with it so I may be wrong. This was on a 2004, not sure if there were any changes with other years.
For the tach signal you want pin #10 on the PCM (white wire).
For the TPS signal you want pin #1 on the TAC Modual (dk blue wire). You could also get the TPS signal at the TPS sensor at the T/B, but the TAC Modual is mounted to the PCM so it was easier to get them both there.
I did all my splices at the PCM since it looks cleaner. I think you can also get the tach signal from a coilpak, but nor sure which wire.
If I remember correctly, for the TPS there are two 5v signals a rising and falling. I'm pretty sure I used the rising one. It's been awhile since I messed with it so I may be wrong.
This was on a 2004, not sure if there were any changes with other years.
10-17-2018, 04:28 PM
#7
Burning Brakes
Thread Starter
I got everything wired up. TPS/Window Switch from NX Express, should this only come on when the nitrous switch is turned on OR should it turn on anytime the key is on ACC/ON?
Also when I did the TPS setting on the window switch it only read a max of 2.5v with the engine not running. Is that right?
Also when I did the TPS setting on the window switch it only read a max of 2.5v with the engine not running. Is that right?
Last edited by billy mild; 10-18-2018 at 09:41 AM.