Do you need another fuse? if not I personally like a mechanical connection better than soldering. you could get a splicer from a welding store that is basically a rod of metal (bronze/brass/alum) with 4, 1/0 guage drilled into each side, with a allen key set screw to tighten down on the wire once it is placed. then you can shrink wrap the spilce. or you could get a cheap splicing union from Home depot which will look like a "U" shaped bolt with one big nut that has another "U" shaped peice that will clamp the 2 pcs of wire together when tightened down. It will be bulkier, and uglier, but will also get the job done.