I have ordered four sets off these lights and they keep burning out within just a few months. They are suppose to last for up to 3000 hours approx. Very expensive to keep up. I will not be ordering them again. I will go to a local hardware store to see if I can get a better product to last longer. 
I can't even get a year out of them.  I wanted to return them but my time expired for a return. Do not recommend this product at all . .   Very disappointed and frustrated.