Another S10 Fuel Cell Question Plz Help!!!!

i have a 99 s10 2.2 ...ok i purchased an RCI 20 gal fuel cell w/ sending unit.... my question is what wires from the factory 2 plugs (one w/ 3 wires & one w/ 4 wires) do i need to use to make my new fuel pump and sending units work ??? i know there has to be someone w/ the same fuel cell in an s10 ... PLZ!!!! HELP!!!!