the accessory tap i bought has two places for a fuse on it. one is for the fuse you remove to be able to plug it in and the other is for the accessory you are adding. it didn't blow either of those, only the ones in the chargers. i finally gave up and removed the power tap and put the factory fuse back in.
now when i turn the key on, it doesn't blow any fuses or anything and everything is working fine.except for the cigarrette lighter, obviously.