Chevy & GMC Vans

hey guys/girls...
im putting a new gas tank in the 96 astro, its all in and bolted up, but i think i may have my fuel lines connected wrong. i can hear the fuel pump running, but im pretty sure no fuel is getting to the motor..
the lines that bolt on, broke off so i just used hose clamps on it, this is why i think i made mistakes.

if some one could tell me which line does what and what order there in that would help a lot. i just remembered my friend gave me a pile of old astro shop manuals from the dealership he works at. ill have a skim through those as well.

If I'm not mistaken I believe one is larger than the other,,does that help ? You still have part of the tubing on the tank and part of your old lines still there, don't you ?

Hope this helps.

no i took the rubber lines off and they got thrown out along with the original sending unit and old gas tank. it would be alot better if i still had that though. there are 4 different lines all different sizes

any more help would be really appreciated. im going to be stuck under this van in the driveway in the cold messing with fuel lines for hours.. this van is going to be my only ride to work for a while..