I have in my dining room lamp 4 halogen bulbs that I wanted to replace, 3 LED unfortunately I could constituted the 4 not there in the lamp but probably a transformer is available. If I use all 4 and I turn on the lights flicker the lamp on briefly and then be off. The color of the LED flash is also something I can not say whether these are yellow-green or yellow-green, but bright enough for the dining table only.