Umm... I don't recall a bind plug coming with my Spektrum RX when I bought additional RX's. Unless it's still in the box and I didn't notice it. I will have to take a look. I connected my bind plug to the carrying handle on the TX using a tie-wrap. Wherever the TX goes, so does the bind plug.

But, as mentioned, it's easy as pie to make your own bind plug by simply connecting the black (brown for Spektrum) to the blue (airtronics connector) or yellow (Futaba) or orange (Spektrum/JR). It simply shorts the signal to ground to indicate to the RX that this is a binding process.

CGr.