your not looking for 1 drain. Your looking for 2 side by side. 1 hot 1 cold. my 5er they were near the steps. some are near the axles. My 2011 Keystone with extreme thermo package does not have low point drains. Nothing but tank drains below the underbelly.
2011 Keystone Sprinter 323BHS. Retired Master Electrician. Retired Building Inspector.
All Motor Homes are RV's. All RV's are not Motor Homes.