Powering lights from the reciver

[Lmackattack]

Just wondering if it is safe to power lights (LED) from an open channel slot from a receiver? I see that there are a +,- on the reciver cover and it holds a steady voltage.

If it is safe is there a device out there that will plug into the reciver and act as an on/off stitch? For example if I have a 4 channel radio with my 4th channel un used. Is there any way to use that channel to turn my lights on or off?

I'm not interested in the mfu as I just want a simple on off function


Thanks for any help.