I tried battery powered lights but they didn't last long but I do have electricity to my coops. I do have nightlights in all of my coops. They are 1 watt LED bulbs. They're not very bright but put out some light. I think the birds get used to them. I also like them so when I look out at the coops at night I can see some light coming from the coops so I know the power is on and my fence chargers are too and if I need to go out to the coops when it's dark I can see somewhat too.Thanks for all of the suggestions!
I will try placing a battery powered light inside the roost area to encourage the young hens to go up the ramp and in on their own at dusk. I checked on them just a few minutes ago after dark...sure enough they were huddled on the ground again near the ramp, so I placed them in the roost again. They settle down and stay in there (until dawn, they come out on their own) once I put them inside the roost.
I'll keep at it hoping at some point over the next couple of weeks they start going up the ramp on their own at dusk. The entire coop area and run are connected and fully enclosed, the only way in is through a door to the main coop which I keep shut so the youngins get used to it for a couple of weeks before I let them out to free range occasionally. What gets me laughing is the little hens run up and down that ramp all day long, they always stop short though of heading into the fully enclosed roost. If I didn't know any better I'd think there was some sort of chicken repellent sprayed inside that roost!