Hello EvoM
It was midnight, i was tail-gating on mustang,,, lol
Anyway, Suddenly
ACD Light on speedometer was blinking, and Anti-lock light was on.
It seemed like my headlight went off and on few times in a one sec.
During that time, i saw my voltmeter and the needle was oscillating between about 13v and 13.2v.
Does anyone have same problem?
Is this battery problem, or alternator?

 

alternator would be battery light and brake like.

 

Both battery and breake light are off,,,,
I havent check voltage of battery yet, but is there other reason why acd light is blinking?