I have a 20 amp in mine. I think Stebel says to use a 15 amp, so either one would work. I fused mine at 20 amp because I already had a holder with the fuse in it, and the wire is big enough that a 20 amp would blow before the wire would burn.
Type I don't know about because I don't know which fuse holder he uses. I have a mini blade type on mine, but I think the harness that comes with the Stebel comes with a regular glass tube (Bosch type). But you can tell by looking at the holder.
i went ot the auto parts store, and picked up a inline fuse with a 20 amp....the stebel cheat sheet said 25 amp, so i figured the 20 would work, thanks for the help, now i know i made the right choice :bigthumbsup: