Wilsons Sandbox

I have just received an e-bay win, a shiny non-california tank that I would like to put on my dented California bike. I have not yet looked into which hoses need to be eliminated, capped, or cut. The Petcock is straight forward. There is only one connection on the back of the tank under the seat. Can anyone tell me which hose goes into that? Then there are some extra hoses. I can guess that the one going to the airbox is capped. The blue drainage hose??connects to the one connection on the tank? The red hose goes...? Are there any other hoses? Without being near the bike I'm working totally on recall and, as you can see, that is flawed. I'm looking for information before I start the project tonight or possibly tomorrow night. Thanks