While installing a new battery, I dropped the wrench and arced it. Now the AC/heater and the rear defrost does not work which did work before. Lites up on dash but absolutely no fan, no power. I replaced the blower motor relay but still nothing. I checked every fuse under the hood and dash and still nothing. Sooo frustrated. Any suggestions? Thanks

 

Did you check the fuses visually or did you use a multimeter?