just bought a JR XF631 6 channel radio /w surface frequency modification. I want to use the extra channels to control
various features on the car that require an on/off (e.g. Lights) operation.

How does one hook up such a device to the receiver without the need of a serve? I assume there is additional equipment required to convert the receiver pulses into an actual on/off state. An electronic diagram would be most helpful so that I can build the device myself as I'm no stranger to electronics.
Any help is appreciated