New Mopar Mini Starter Grinding (Clicking)

How about a rundown on how it is wired up? How long has it been wired this way and working? I don't mean the new starter, I mean the wiring in general?

How do you have the block grounded? Separate ground all the way back, or ground to the body?

If you didn't run a separate ground wire front to rear, how/ what size grounds at each end? How long since you've cleaned terminals/ connections?

What size wire?

How is the solenoid wired, stock start relay, or the every--"popular" "Ferd" relay in the trunk, etc?

Did you check the charging voltage?

These and many other questions..........