was given a fluke 1587 insulation tester today to go meg a mg set. i don't know if i am just brain dead or what but i have no leads no instruction book and really can't find anything on~line that gives me any clue as what to do with this thing, if anyone has one, or can get me a video that would let me know how this thing works? i ordered the 3 prong replacement lead today and was just messing around with it to figure it out but i don't a much different reading between this and my fluke 87v as far as ohms to ground.