i hate wires, so the bird's nest was only for testing it ...after that i soldered the wires directly to the pi board.
also note the micro switch soldered to the "run" terminals, which has start and reboot function.
for those who not are afraid of using a soldering iron, here's the prescription:
pp2 = 5v+ ( red )
pp5 = 5v- ( black )
pp36 = D+ ( white )
pp41 = D- ( green )
after this intervention, one of the usb port is not available anymore ...but who cares ..there are still three on the pi2 board and two on the lapdock. if it's a big deal you can block this port with your favorite chewing gum or what ever pleases you.
here's some pictures of the feast.

full size here: http://oi65.tinypic.com/210hguv.jpg

full size here: http://oi67.tinypic.com/33di23b.jpg

full size here: http://oi66.tinypic.com/34sryty.jpg

full size here: http://oi65.tinypic.com/15qt9o0.jpg

full size here: http://oi64.tinypic.com/34ypwle.jpg

full size here: http://oi68.tinypic.com/2n74dxf.jpg

full size here: http://oi65.tinypic.com/nxq0pt.jpg
i do love these motorola lapdocks and i'm happy that i bought two of them on ebay !
when i got the stuff i ordered everything will be changed ...but until then it's workable, as it is now

see ya.