Guys,
As a preface...i did search but am terrible at reading wiring schematics. I dont want to tear into the car further if at all possible but have full access to wires at the BCM. Is there an Ignition Hot wire (w/fuse) down here I can run my Wideband off? Here are the wires I am looking at.
Any help greatly appreciated.

 

did you see the thread at the top

https://my350z.com/forum/audio-and-v...-for-350z.html

 

BCM typically pulls GND on outputs (say to turn lights on) so the device is wired for 12v already.

The 12v accessory outlet has fused ignition protection.