2004 f150 5.4l v8- starting having an issue with my truck not starting. I'll put the key in and go to crank it and get 1 click. Not real sure if it's under the hood or in the cab. I have lights, radio, etc. I can put jumper cables on it and it will fire right up. Thinking it may be a relay or the solenoid. Any thoughts or things I can try to help narrow down what could cause this? It Thanks!