I bought from Xenon Pro a pair of RAM 1500 LED projector replacement bulbs. The bulbs once installed would cut in and out while in the on position. I don't drive the vehicle so by the time I got around to calling XP they fellow told me to take out the resistor paks. When I had time to do this a few weeks went by and the lights without the resistors didn't work. So, I called XP and was told for $40 they would replace my order. What I didn't learn was what caused my problem and without paying more they would not send anything. I have put the original bulbs in and I am left with a set of bulbs/resistors they won't take back so, I guess I bought myself and education. Nice people (they would talk to me all I want but not help me) not so good a product. Buyer be ware!