Medium and Heavy Trucks
Have Truck Repair Questions? Ask an Expert
hi im alex, have you tested the alternator?
the large post should have battery voltage, wire at connector wire will go to charge relay in cab if grounded will shut off battery light in dash
large cable at stud on alternator should be 13v or higher when running
please remember to rate my service when you get a chance, i will continue to assist you after rating so rate with confidence, Thanks