sending unit ? for cell install

this is a 1989 2wd standard 2.2 motor and i am putting a fuel cell in it and need to know what these all do for setting it up the right way
: what do these do?? im assuming the one i have the blue ziptied is some sort of vent valve roll over valve. and the green is a ?? return??

and the yellow tagged one is primary feed and the one i have the red tie on??

you are correct

so the one on the factory sending unit, that i have the red zip tie on hats that for? and what exactly can i get away with eliminating for the cell install. i gotta use the vent for the fill tube for a return port already and i dont want to put anymore holes in tank. so i am going to run the 2 back to the sending unit and that one next to vent as my return, sound righ or can i dump that line to and just run the ones on the sending unit.?

im in the same boat as you i bought a fuel pump and have no clue what lines i need if you find any thing out let me kno plezzz thank you

well i conseeded my loss here and sought out someone who is helping me out with this: the dude im getting my bed from, haha lovin this dude for sure,so as i referance a color for each "line" the color denotes the color ziptie on the factory parts, withthat said, the red is return, and the yello is primary feed, blue is a rollover vent, and green is also a vent tube , i am T'ing off those 2 vent lines, and in my cell i am drilling a hole, threading it, and screwing in a barbed fitting as to add a small filter, like for a valve cover or whatever, those little tiny air filters, anfd that acts as the vent for the tank. as for youre fuel pump, if its a powered one and its regulated you should be able to put it and a new filter in line of the feed.

thanks man today after work im going to just block off every line but the main one.. and nice idea one the filter never though of that might have the try it