Where to get 75A Fuse???

[driftkid316]

I changed my alternator today and now almost all of the electrical stuff in the car doesnt work: windows, wipers, hazards, radio, AC, guages....... I didnt know whatsup so i just checked all the fuses, and came across one that was blown. BTW i have a 95 240. But yea the fuse is a 75A female. It came from the fuse box in the engine bay but the cover doesnt say exactly what that fuse is for(its the top left fuse in the box if facing the motor). I went to autozone,pepboys, kragens and couldnt find it, they only had 60A, but even still the style fuse wouldnt fit. Where can I get this fuse? it doesnt say nissan on it or anything like some of the other fuses, so i dont think i would need to get it from the dealer. any help is appreciated. thanks