Check the link out, I think i found a solution. The toggle switch is to turn on the NAV display, when you put the car inreverse it will switch the display to backup camera.

https://www.myg37.com/forums/audio-v...version-2.html

 

Hey guys,

I'm reading the VCI-NIS1 manual and I have some questions.
1. Connecting the power supply wires:
- Connect the VCI-NIS1’s BLACK wire to chassis ground.
- Connect the RED wire to a switched +12 volt source.

Q: Just tape the black wire to the ground? Which +12 Volt Source? cigarette lighter?

2. Wire the VCI-NIS1’s BLUE wire the vehicle’s +12 volt reverse light supply wire. The reverse wire will show +12 volts when the vehicle is put into reverse.

Q: How do I find the reverse signal cable?

3. Wire the VCI-NIS1’s GREEN wire to the vehicle’s negative parking brake supply wire. The parking brake will show continuity to ground when the parking brake is on.

Q: Again how do I find the cable?


Thanks.

 

i got that module working on my g37, but i had it professionally installed so im not sure the details..