Electrical issue on s13 sr20det

[j.dover08]

Ok I took my buddy for a ride in my sr swapped 240 last night and we got bak to the parking lot chilled for a little bit then when I started to leave I started my car and it started
Right up then died like a loss of power now nuthing on the interior or exterior works like windows headlight etc etc. The 75 amp Alt fuse blowed and I havnt done any trouble shooting cuz of the cold ass weather but maybe some ideas to start me off?

[FostyTG28]

Check your fuse box on your car. I don't know about the 240 but in my Maxima the fuse box is right above the hood release. Check there for a blown fuse, thats a good place to start.