I'm needing a diagram of the fuse amperage and what they do for a 1997 Chevy Blazer?

I know where the fuse box is located, and I know the little picture I'm looking for is on the lid...problem is the lid is missing. lol I've found a picture of what amps to use where (not sure if it's right or not) but I'd like to know what each one does. Any help would be awesome. Thanks!