Ernest T,

I use a Maxx Products on board glow driver with mine. You can set it up at any percentage of throttle for on and off. I also used a dedicated auxilliary switch and channel, so I can reheat the plugs at any throttle setting. Going to low throttle when a glow plug goes cold is not conducive to long life of a nice model plane. You tend to run out of airspeed, altitude, and ideas simultaneously.

Bill, AMa 4720