yesterday i bought a pair of ZW emg set pickups acually its a kerry king set i just dont want to use the boost. ok today i made the pickups fite in the rg but i have a bigger problem.. the jack, the jack it came with the set,no way they will fit in my rg. it have 3 wires attached to it, i understand the third one is for on/off switch for the pickups because they use battery but since i can not fit in there, i was thinking about using my old jack which have 3 leg also with 1 left out, Now this is my question. is the leg left out connects to the battery or the volume? if anyone installed this b4 on to a rg or a simliar guitar please tell me how because i am goin to china in 2days and i really want to bring this guitar with me.