I was only getting one click from the starter solenoid. I changed starter solenoid and battery and starter . I’m not sure what is going on but ever since I changed out all of those parts when I try to start the truck it kills the battery. I have to just disconnect negative terminal and reattach then the truck has power again

 

The need to fiddle with the battery cables is a sure sign of a bad connection between the battery and the cable. Do you have those 'repair' battery terminals on your cables? Those leave people stranded. You may also try to clean up your battery terminals and cables with a brush. As for your 'single click' problem, that is usually because of a faulty cable between the starter solenoid and the starter OR a ground cable between the engine block and the battery.

 

I had the same thing and just fixed it with heavy duty terminals now it cranks like crazy but still not starting

 

If you need help, please start your own thread and we'll reply to your problem on your thread.