We're still missing something easy as the ammeter would have to be before the fuse block and before the T and the T is before the fuse box because circuits such as the headlight switch ect which are hot all the time and are not fuse protected by the fuse box, current would be flowing (when they are on) but not thru the ammeter and I know that is not the case. I'm assuming you've checked out the wiring diagrams a www.mymopar.com. How is Painless wanting the ammeter to be placed in relation to their fuse box?