10-18-2013, 06:09 PM
Hello SteveJB, later production of these 20's had dial lamps. Yours must be an earlier set. The lamp is easy to add to the dial, and it taps the tube filament wiring for power. Take care, Gary.
"Don't pity the dead, pity the living, above all, those living without love."
Professor Albus Dumbledore
Gary - Westland Michigan