ok so i just got a new ice cap ballast fro a 250watt mh and when i tryed to plug it in to the mogul it looked like it was not going to fit the mogul has 3 prongs but the middle one is roundish and the female part that comes off the ballast has 3 prongs but they all look like they are all just strait lines going up and down is there something i need to buy for this like a adapter or something?