I replaced fuel pump. There was a short found after pump replaced. Truck started, ran. It stalled cuz short in wiring rats are through. Found repaired. Pump ok. Now, I turn key no check engine light no start. Sometimes it comes on fires right up and runs great. Is it switch, I get no spark when no check engine light does not turn on. I'm lost, when it starts it runs Beautiful

 

Sounds like the ignition switch, The pcm is not getting power from the switch that's why the light is not coming on.