I am a plumber and when you open the door of the dish washer there are two galvanized tabs with holes in them. You put small wood screw through the holes up into wood cabinet above those tabs and that will stop dishwasher from falling forward. Plumb it into garbage disposal after knocking out disposal plug if new disposal. If same disposal and you are replacing dishwasher no problem. Use stainless steal flex line about 6' long for water supply line.
You can get in coast parts
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