My information center displayed a Check CHARGING SYSTEM warning then a few days later my gauges went out while but my ABS and Battery icon light stayed lit. There was no performance issues, my car never died or loss power. AutoZone said there is no issues with the battery or alternator. I brought both of these this past December. All fuses are intact. I did find a corroded ground wire from negative terminal of battery to engine block, which I changed out. Still same results. I did notice the wire from alternator that leads to battery is extremely hot. What can be wrong?