I made an appointment to have a dishwasher installed. Your plumber made it seem like it was an impossible job. The dishwasher is a bosch. It has a bit of a different electrical configuration. The plumber immediately said this is complicated (indicating the electrical). He sat and read the installation manual and said he couldn't install the dishwasher because he didn't have an elbow that was required. He actually suggested that I return the dishwasher. Since i was paying $99 regardless I had him change out the shut off valve under the sink ($300--a rip off but whatever), which he indicated was leaky. AFter he left I called a local plumber I have used in the past. He said all new bosch dishwashers come with this new electrical box and it's very simple. He also said he couldn't understand why any plumber wouldn't have that elbow on the truck because it's a simple, common piece of plumbing. I told him everything that was required (hot water hose and elbow) and asked if i needed to order those parts. He actually laughed and said no, I have those.