Spektrum DX7 Kill switch

the other day, as I was trying to get the battery out, my jacket caught the throttle and luckily the prop was a few inches farther from my face; otherwise, my face would of been swiss cheese. Anyhow, this vid shows a quick way to implement a "kill" switch with the DX7. Credit goes to rcgroups thread; however, I wanted to do this vid because those instructions on rcgroups were poor and it took me a long long time to figure it out.
a few things to remeber:
#1 safety - Remember to have someone hold your plane with the prop away from anyone; or like myself in the vid, take the prop off.
#2 I found that on some of my models I had to rebind the rx, otherwise it did some quirky things, so always rebind after doing this.
#3 on some models, I had to adjust the throttle trim to a much higher level otherwise the throttle was a bit off.