I have a volt meter. if you are just telling me to look because you dont know state so dont be a jerk because you dont want to tell me.
So many people change their CUCV wiring that it's really dicey to believe that anything you read on the internet applies to your particular truck. You get good advice here, but the rule remains, "trust, but verify". I know a guy who split his upper bus bar into 2 busses, 24V on the left and 12V on the right. He had sound technical reasons for doing this, having to do with feeding power to some serious radio transmitters. His vehicle was not hacked in any way, but it was heavily customized to meet his unique requirements.
So when experienced people tell you to test the voltage for yourself, it's because they know what they don't know about your vehicle. They're trying to save you pain, not cause you pain.
Also, if you don't understand automotive electricity well enough to figure out which bus is which, you really need to take a course before you start mucking with this. CUCV batteries have enough juice to cause serious damage. My CUCV came to me with <2,000 miles on it because someone screwed up the electrical system. There was evidence that many people had tried to fix it.
You are being supported here, not abused.