1. Another vote for azpete.
2. Here's a link to a page that will have the HWH hose and electrical diagrams specific to your rig. It may help you isolate which hose is leaking.
https://www.hwhcorp.com/winnebago2005_diagrams.html
If you can ID the hose, you (or a service tech) can most likely be able to get to its fittings at either end in order to remove and replace it. Worst case is you leave the old, disconnected hose in place and run the new hose via a fish tape or alternative routing. In replacing the hose, it's important that the replacement be exactly the same as the old one in terms of all specs, including length. There are white tags at either end of the hose with the HWH part number. The best way to do this is to order a replacement from HWH. Often the hose will seem too long but this is by design in order to balance fluid flows between hoses.
Some posters have had hoses fabricated locally but IMHO it's not worth the savings unless you're under extreme time pressure. If an HWH hose costs $50 w/shipping your savings can't be too significant in the overall scheme of things.
If you're not up to DIY, start contacting local truck or hydraulic shops.