Truck wouldn't start earlier, when turn key to acc all lights are on and voltage reads fine. Then you go to start and nothing at all, everything goes fking dead..got it to jump start finally, battery was only 7 months old but under 3yr warranty Bi-Mart so I went and replaced it for new one after it showing weak on a load test. New alternator also. I have noticed for awhile my battery gauge blink around with blinker on. god damn electrical issues are my favorite...

 

Start by checking ALL connections from battery terminals to fuses to ignition switch. All connections should have bare, shiny metal tightly contacting bare shiny metal.
Also get a multi-meter. Next only to our senses, it is the most important diagnostic tool.

 

Thanks that's what I was planning on doing, I've always owned a multimeter very crucial tool