Question

How to insert the prewired pins (Green and white wires) into the back of BCM connector (green), any certain way?

Is there a special tool to use?

Answer 1

Theres a part of the factory connector that unclips. It's on the back side, I believe it is white.

Once unclipped, you will be able to insert the prewired pins.

 

I have seen Altimas that actually have wires in thoe pin locations. If there is a wire already there, then connect to that wire. You wouldnt need those prewired pins if that's the case.