I recently bought a new dishwasher to replace the old one my home came with. It looked like the ground wire of the old machine was just wrapped around the bracket on the dishwasher. Now, I'm at a loss as far as how to connect the ground on the new machine. Shouldn't it be connected to a dedicated ground wire? I only have a hot and neutral coming from the house. Please see attached pictures and advise. Thanks in advance for any insight.