just put a small fuse box next to the main one you can get ones that hold as little as half a dozen fuses and wire it direct to your blower switch/circuit. if you dont want it to be seen hide it inside the car. if you cant do this yourself an auto electrician wouldnt charge much to do this. the chap i use quoted me five hundred to change my saff fuse box . i also have a smaller fuse box as well hidden away for the rad fan headlights and a few other things