Starting Issue

[RedBullx]

I've got an 06 Explorer Limited with the 4.0, I turn the key and nothing happens, other than relay click. I've replaced the starter, battery, battery cables, ignition switch, neutral safety switch and still won't do anything. Could it be the key? I've been stuck for months and don't know where to go from here. It will start by jumping the starter

 

[BrooklynBay]

Welcome to this forum! When you said that you jumped the starter, does that mean that you bypassed the starter relay on the inner fender wall? Maybe the starter relay is bad?