problems on my fuel pump in my 95 jeep wrangler?

[random]

my fuel pump went about a month ago, so i replaced the fuel pump, then yesterday it stalled out, and wouldnt start, because of lack of fuel, so we thought it was the fuel pump again, so we drop the tank and everything, and we tested it in a bucket of gas, and it didnt work, so we moved the cords a lil down under the unit, well the top plate of the unit (this is with a new pump btw, i had two), and then put it back in the bucket, and surprise surprise it worked, we put some new connectors on it, but i dont want this to happen again, idk if its because its so bumpy of a ride or what, tbh u would think they would make those with sturdier wires, but basically i jus wanted advice of how i can prevent this, i got it runnin good now, it runs strong, jus that damn fuel pump, and has anyone else had this issue, ive also had an issue with my starter as well, as far as the wires jigglin loose, and then it not starting, i replaced it tho, so its fine for right now, also any suggestions of how to make it less bumpy lol, personally i dont mind it, i jus mind it when it jars loose wires, ive got a 3 inch body lift if that makes a diff in the smoothness, um 2.5l, automatic, thanks