XMMAN

How does one come across wiring diagrams for a vehicle? I am trying to install my impact sensor, but my wires are different colors then what's in the instructions.. can someone tell me the name's for the wires/ or function listed in these instructions: http://infiniti-techinfo.com/asistgc...CU%5C1SU10.PDF

So then I can then track down where they are in my car.. if worse comes to worse I will just wire into the hood pin.