Actually Indian Polo 6R does not come fitted with trunk light. I have retrofitted the trunk light and tapped the wiring from front dome light. So whenever any of the doors are opened trunk light will turn on, same way as footwell lights. I want to wire it like oem, so that light should lit only when trunk is opened and go off when trunk is closed. Is it possible?
I looked into wiring diagram, mentioned during your 2nd trunk light installation.
Pin 1 tapped from Pin1 T5h(Rear lid lock) RED/BLUE color wire.
Pin 2 from +30
Now the problem.. The RED/BLUE color wire in my car is in pin4, and a white wire is on pin1... please see picture.
How to proceed from here?

