BTW an important detail, dont forget a fuse to battery!
If your fuse block dont have a spare you can use an old style cop car black plastic fuse holder about the size of a deck of cards, made for under-hood installation, mounts with a single screw and a snap on weather cover / insulated lid. These fuse holders show up in the flea market or tail gate section of your local ham radio rally, usually for just a buck or two. They are resistant to weather, oil, heat, UV and are darn near unbreakable. Just unsnap the lid hose it down with WD-40, let it set a few hours then run it thru the dishwasher it will come out clean as new.