Its very simple. I use a OFNA micro failsafe (it is the same size as a penny or smaller!) and you just hook it up between your throttle/brake servo and Reciever (RX) and then you turn on your transmitter with it in place put full brake and hold it in place while pushing down in the button with a pencil or something like that. You need to hold it down for something like 4 seconds. then to test it just turn your tx (loses radio signal) and it will automatically put it brake (should) lol

I will not drive a car without one. It is a lifesaver if it gets out of range!!!

i cant remember for sure but you may need to shave the plug to fit in your RC wire hole in your TX. Not 100% though. when you get it you will see![&:]