AMAX LIGHTING FC8T9/T5 and FC12T9/T5 120-Volt 6.63 in. Electronic Ballast 2 Lamp HD3222-120A - The Home Depot
Circline Ballast
Homdec 12V LED Puck Light, 4.5-Inch Recessed Mount RV Dome Light, 4W 280LM 3400K Warm White Light, 12Volts LED Interior Light for RV, Camper, Boat, Motorhome - Walmart.com