As is my normal practice, I tried each bulb to make sure it works prior to installing in any building. I do this by touching the leads to one of the switches controlling other working lights on my layout. Two of the five bulbs flashed briefly, never to light again. The other three never lit at all. I definitely do not recommend this product. BTW, my lights are powered by a MRC power pack through Atlas switches. The circuit used for testing was on and nine buildings were lighted. PS: I later found out that the voltage I was using was excessive. This experience was my bad. I have used the average rating and a yes recommendation, in fairness to the manufacturer.