fuel tank refit

[mr.mono7]

Evenin'

Been doing some welding so had the tank off. It's clearly been off before because half of the pipes weren't connected to anything and the plastic fittings were sheared off etc so had to get some new bits n pieces.

So, looking for some guidance on how it goes back in. I've read the wiki but can anyone tell me how to route the breather cross pipe? Does it need to go over the top of the coolant pipes and other bits and pieces? Should it be fastened to the van? also, the pipe that comes out of the top of the expansion tanks, what does that connect to? Its labelled as an 'end piece' on the wiki-item 17

https://club8090.co.uk/wiki/images/thumb ... 1986T2.jpg

Many thanks