RE: Binding Spektrum AR7000
I read where others are having the same problem with the AR7000, so I pulled one down and did a little experimenting with it. To answer your question, if you use the bind plug yes you have to have a 3 wire switch harness in order to put the receiver into bind mode. But, there are work arounds to this. In essence all the bind plug does is jump pin 1 to pin 3 in the battery jack. So there are several ways to do this. 1) plug the battery into another channel location on the receiver leaving the actual battery slot empty, then use tweezers (or something else metal) to touch pin one and pin 3 at the same time. This will put the receiver into bind mode. 2) plug a Y-harness into the battery slot and plug the battery into one side of the Y-harness, then use something metal to touch pins 1 and 3 on the other side of the Y-harness. 3) Plug the battery into to battery slot on the receiver, and then you should be able to see the metal slots in the battery plug. Use a tweezer to jump pins 1 and 3.
I've tested all of these and they work for putting the receiver into bind mode.
Hope this helps
Ken