I noticed a key fuse was out on my car (it controls the rear defroster, dome light, lowest setting on windshield wipers, and no seat belt/headlights are on warning sounds). I replaced it yesterday, now the car is having trouble starting. I replaced the battery two months ago because of a similar problem, but my mechanics said they didn't find anything slowly drawing on the battery and the alternator was fine. Any ideas? I'd really appreciate the help!

Many thanks for your time,
A sad, carless girl :-/