wiring after bronco tank swap

[Boise Outlaw]

I went and installed the 35 gallon bronco tank in my rig, the tank was a donor from an 80's bronco with mechanical fuel pump and has 3 wires running from the sender. Our tanks have 4 wires running from the sender, 3 of which are the same color as the bronco tank sender and the other i believe has something to do with the solenoid selector maybe? I've gone and spliced the 3 same colored wires into the factory connector but looks like my fuel gauge wont read it. Is there a way to make this wiring work?

[351fifty]

I believe you have to modify your pick up and float on the me from your truck to make the bronco tank work

[terryknight]

i believe kris is correct

[m j]

even on an in tank electric fuel pump unit only 3 of the four wires are used
our trucks use 1 for the sender and maybe a grd
shouldnt be too hard to look at some pics and find the wire you need