hello guys,
I bought a UBEC to power up my 7 servos on my Summit.

I know I would disconnect the RED wire on my ESC (EVX-2) when plugging into the Reciever,
ok I've done that so far...........

.....now I plug in my new UBEC into the batt port of my Reciever,

my question is:

where do I plug the UBEC in for power?????
I know its on one of the Two 2s Lipos connecting to the ESC,
but which one?

someone told me on the forum that one of the batteries will be drained less b/c one powers the motor, other other 2s Lipo powers the servos.....

which battery shall I piggy back for my UBEC?

I dont know which one to tap into?