runs for 15 minutes and shuts down. clicking from power dist box turns over but want start. set for few minutes with key off starts but shuts down after a few minutes. have to pull asd and fuel pump relays to stop clicking. codes p0320 p1389. found injector harness wires melted and replaced harness and ecm. still have same problem. help please

 

What caused the wiring harness to melt? Possible other wiring affected?

 

injector harness common on these. rest of harness looks good.

 

replaced cam sensor running good at this. thanks for comments and suggestions.