:help: Alrighty...1990 Dodge Ram, 1/2 ton, 318TBI, A904. 3.21 rear.UNK miles...odometer broke @138K. Probably 200K plus. Charging issues. New 120amp alt. year old 780 cca battery tested good. Cleaned starter and all connections. New 2gauge ground wire. New terminals. Sometimes volts fall so low that the check engine light comes on. Had to jump it 2x last week. Even when charging decent (still not halfway up volt gauge), volt needle will move with slightest load, (taillights, blinker, etc.). I was told the power feed wire could be bad...any thoughts?