Got some type of starter wire issue!

U don't need diagrams you can see them plain as day from starter to chassis one cable from chassis to batteries another cable

 

I'm totally ASSuming what truck you have here since you never mentioned what you have. All I can verify is that you have an S60.

But here is an installation diagram showing the PWR wires to the starter from a MAG SW. I'd pull off all the nuts on the studs and make sure they're clean and retorque everything if you haven't done so already. As per the GND question, you should also check the GND stud if you haven't done so already either just to thoroughly check the whole electrics.

 

Nice! I used a 2007 CL120 in my example.