DC 12V 20W Halogen Light Bulb MR11 Spot Light boat bus - 12VMonster Lighting
Westinghouse 5-Watt 12 Volt Halogen MR11 Clear Lens Narrow Flood GU4 Base Light Bulb 0476600 - The Home Depot
4pcs LED MR11 Light Bulbs, EEEkit 3W 12V LED MR11 Flood Light Bulbs Equivalent to 20W Halogen Bulbs, GU4 Bi-Pin Base for Landscape Accent Lighting, 3000K Soft White - Walmart.com
Red Green Blue Yellow 12V LED MR11 Low Voltage Light Bulb GU4 Coloured Spotlight | eBay