I have read on forum the moderate difficulty of booster removal. I found one nut difficult to access as well. Perhaps it is mentioned in the factory manual but I do not have one. Anyways if you remove the battery cable and get the fuse panel loose and out of the way that somewhat hidden nut is quite visable and easy to remove/install. I was at a salvage yard and did not have a good tool to get at it otherwise with me. Perhaps this is genearl knowledge? I assume there is enough slack in the wiring to do the same when I actually change it into my car. Or I have a better tool selection on hand and can get that nut from inside the car fairly easy.