"bluwtr49".....We had a lot of fun showing people the dishwasher in our new coach and even made fun of it ourselves. Not anymore! We love it. When done with a meal we'll wash really large pans and put hem away, but silverware, plates and bowls go in the dishwasher. We usually take about three days to fill it. Usually, after dinner, we run it. It's soooo quiet you don't know that it's running. Ours is Fisher Paykel drawer model. The cleaning cycle takes 105 minutes. Having a dishwasher is not for everyone, but we find it to be a nice addition and it really gets things clean.
I was asked to look at installing one in a new coach that was just like ours, that didn't come with one as an option.
Your biggest issue will be reworking the cabinet space. The connections are no different than a house. Our sink drain has a "T" for the dishwasher drain and they just tapped into the sink hot water. The sink drain "T" is a smaller version than a typical sink, but manufacturers like Newmar have them available in their parts department if you can't find one.
Lastly, a 110 volt power source under the sink would make things easy.