Well,
According to the Lionel parts break out, it has a firebox lamp. As for the 'glow', there was no flickering or ashpan glow/flicker like the JLC series or Legacy series.
I just picked up a Reading T-1 at York in April and the 'Chessie Steam Special' in April. Both had the firebox light when I tested them.
I hope this helps you.
Henry J.