on ammeter cars NOTHING must be hooked on batt side of the charging sytem, but on alt side ( no matter if on a juntion inside the cab, but allways on alt side. A wrong sourcing will get wrong readings on ammeter and even damages on it

and the alt upgrade is MANDATORY even running stock cars. This is a big fail from MaMopar what has being hurting the wiring on the long therm life of our cars

some touchs on wiring and bulkhead and voila.

we have talked about that on several threads... search for alt and wiring upgrades around.