End Stop Issue , mechanical end stop 1.2 (no replies)

I almost Finish My new Prusa Mendel 2

i need Help with this End Stop , I know its common problem and i read thousand of replies but i did not really understand how to connect it to my

Ramp 1.4 using 3 pin

1-

A-3 PIN Cable -------(Red - Black - Blue )
B-RAMP1.4 Board (S, - , + )
C- Sprinter


2-

Is there any changes in the Configeration.h file i have to make it ?

3-
This Picture show my End Stop With the