Q. My quarter scale servo came with a y-harness. How do I use it?
A. The y-harness is included so you can defeat the Battery Eliminator Circuit of AM receivers. This is required, because that circuit limits the amount of current the servo can draw causing it to behave erratically or lessen its torque. To use the y-harness, plug it into the same channel that you plan on using for your servo. Then plug the switch and battery into one end and the servo into the other end. Do not use a different battery to power the receiver. Because the negative and positive traces in the receiver are linked to each channel, the battery on the y-harness will power the remaining servos and the receiver.