> Do I just remove the plug from the board?
Yes.
> Then what about wires to receiver. I have futaba 7c.
Assuming you want to use the left stick, these are channels 3 and 4, so you need to wire these two channels from the receiver to the DMR203. I don't know off hand which way around they go

, but if it spins when you move the stick forwards, change them over
If you want to use the right stick, then wire up channels 1 and 2.
> Can chanel 7 be used for anything?
If you buy an RC switcher, you could turn the light on and off ?
Adrian.