It all depends upon what your on-board glow system consists of.

Are you using a servo to operate a switch in the model? Then you just use an extra channel, set it to operate off a switch on the transmitter, and set the ATV to operate the switch.

If you're using an electronic on-board glow system, how does it work? You'll have to check with the manufacturer to determine how it works first, before you can interface it with the R/C system.

Some on-board glow systems are intended to be installed between the receiver and the throttle servo, and you adjust them so that they come on when the throttle is reduced below a certain point.

Please check with the maker of the on-board glow system to see how it should be operated. You may be surprised that little or no programming of the transmitter is required.