"Lego needs to make an extension wire with the new power functions connecters on ALL 4 connection points it really does hinder the use of the wire as said in a preavious review. lego also needs to make an extension wire that has one brick with both connections the new power functions connectors and the other brick with both connections of the old 4 stud connecters. im not even shure why they changed the connecter type, I personally think that the 4 stud connecters were so much better that these new ones."