OK, so I need to know what the wires 7&8 on plug M1 on BCM do. Page 67 on PG of fsm.
http://psedog.com/cars/fsm/g35/coupe/2003/pg.pdf The reason is, the guy before me installed some aftermarket security system and I am trying to bring it back to oem. AAAAnd cant find the ends of the other two wires so I am hoping they are grounds so I could simply well ground them..

 

on page 67 of that book "7 & 8" are on the smaller plug marked E105. The numbers refer to connecting points on the BCM, that's why plug M1 starts with "21".
Check page 14 of this book:
http://www.nicoclub.com/FSM/G35/Coupe/2003/bcs.pdf
It looks like pin 7 is + power from the battery and pin 8 (bottom of the page) is ground. Make sense?

 

OH ok, thank you! One more question, is it safe to just put electrical tape over the power wire and simply ground the other wire, I mean it simply just wouldnt be powering some feature. which I supose is security

 

Edit, my bad my car is 2004, I looked at the FSM of 2004 and M1 connector terminals 7&8 seem to be the numbers of those...

 

OK, here's 2004:
http://www.nicoclub.com/FSM/G35/Coupe/2004/pg.pdf
page 66 does show pins 7 & 8 on connector M1 for the BCM. However, here's the BCM book and oddly it doesn't look like pins 7 & 8 are in use. Look on page 10 & 11:
http://www.nicoclub.com/FSM/G35/Coupe/2004/bcs.pdf

So the first question is, are you sure you're looking at the BCM? There are many black boxes in our cars.

And these two wires are just hanging there at the moment? Are all your car's systems working correctly? If so, then yes I would just tape them up. Certainly don't ground anything you know it's meant to be grounded.

 

The plug with the 2 crimps on it the red and green.