I have a 2003 Tundra Limited 4.7 V8. The voltage meter is maxing out and A/C fan going too fast and lights getting a lot brighter. Engine idle way down. I replaced the alternator yesterday and still same issue. This morning I actually lost all lights, A/C, Gauges etc.., but the engine still was running at low idle. After 20 seconds it cleared and was fine. I turned a/c back on and did it again. No clue on what it could be. HELP!!