hey y’all! We got a 6.4 the alternator went out, so we replaced the alternator. After replacing The alternator, the battery light comes on and stays on. So we thought maybe a new bad alternator. Swapped it again. Still doing the same thing. What voltages do we need to be looking for? Or do y’all have any ideas? Engine code is P0626-FF. Can’t find any chaffed wires. Two new batteries. And a new alternator.