hey man heres what you do il tell you how to set it all up on your dx3s from top to bottum first your goin to need your bind plug, your kill switch and your radio and reciever
here it goes first lets set up ur kill switch on your radio:
1. plug ur kill switch into your recievers aux port (turn on radio not reciever)
2. click the black scroller on the back of your remote to get to the MENU
3. scroll to AUX Settings and press scroll button
4. set aux trim to 0 and mix to Disable
5. hold scroll button until menu closes.
6. turn on reciever and flick the aux switch up and then down on your transmitter. you will notice ur kill switch go on and then off. (if it does this your doing good so far now we will go to the next portion)
1. turn the switch on your remote so your kill switch is off and do not touch this after it is off
2. turn off reciver. unplug kill switch. plug the reciever battery in to aux. and put bind plug on bind/battery port.
3. turn reciever on
4. holld the scroll bar. scroll to bind and click *HOLD THE BRAKE DOWN* then scroll down on bind screen click BIND on the transmmitter well holding brake*.
5. now your transmitter should bind and your throttle servo should be in brake position. let go of brake and turn reciever off.
6 take out bind plug and put batter back in that port and then put kill switch back in aux.
7. turn on radio turn on reciever. now turn your kill switch on. now turn your transmitter off with receiver on and the kill switch light should be off, (*also the reason i got you to hold the brake down is when you turn your transmitter off your brake should lock in to*)