Yea its usually called a "fuse tap" And there are several things to look for....A device that looks like a fuse with a pigtail coming off of it, sometimes you are supposed to plug two regular fuses into the top of it.....And there are also just fuse taps which slip over the hot side of the fuse, and than you just insert the fuse back into the fuse box...Autozone, and Advance Auto carry both I think.