2007 Chevy Express Turn key no start no lights no dash lights no click no nothing headlights are out to no hazards

Just installed ground from motor to chassis and cleaned battery to chassis ground

Battery is charged have positive to alternator

Any info would b greatly appreciated as I am stuck on the side of the road and this is my only vehicle
Thanks

 

Do you have 12V on the positive stud in your underhood fuse block?

 

I have not checked but I did find 2 tcb fuses blown ,replacing did nothing I will check first thing in morning for 12v at fuse box
thanks

 

It was a loose positive at battery understand I have 4 golf cart batteries in a DeWalt tote in the back of my van with a lot of stuff stacked on top so I had to do a lot to get there thank u