Oh yeah. I'm not looking for crazy flicker like a coal fired locomotive. Just a slight variance in the glow from the firebox. My other steam locomotives (all oil fired as I only have ATSF and SP models) have a steady red light. Even oil fired there is a bit of flicker, which I'm hoping is the effect these 2 LEDs create. If it works out I'll retrofit my other locomotives.These were oil fired so I doubt there was much flicker anyway. Looking good so far.