As I recall, the "manual" was a piece of paper that basically said "Put 8 AA cells in this hole in the back, put your crystal in here, these are the sticks to work speed and direction". For the receiver, you were told which channel was which and where to plug the RX battery in. There was no mention of any peculiarity as to which pin was which, because it was assumed by the manufacturer that you would not be using any inferior, non-Sanwa products with it.