i see five wires coming from the xcam.  what pin number is the copper wire?
 
1.  white/orange (pin1).
2.  orange (pin 2).
3.  white/green (pin 3).
4.  green (pin 6).
5.  copper wire (pin ?)
re: camera pinout diagram
a - w/g  g  w/o  blue  w/blue  o  w/b  b
or
b - w/o  o  w/g  blue  w/blue  g  w/b  b
 
try this out!
 
 
the stranded copper is for grounding.  you will need to use a 'shielded' rj45 connector, if you want to make sure the camera is grounded and protected from any possible electrical surges. 