Hi i have an electronic problem with my mk3 supra

[racer022]

While driving sometimes, especially when using the ac, the battery, tems, rear light signal and the cat dash signals or warning lights comes on. The other thing that sometimes happen, this other problem happens when it feels like, while the car is on, when the headlight is switched on, the car would die, it wont start and the headlights wont work either, i would have to unplug the battery for a few minutes then connect it again then the car would start and lights would come on, then after driving for a few the dash lights would start to flash. I am of the belief that some wire somewhere is touching or a contact is dirty because i have replaced the alternator a few months before. I have no idea where to look or what to check, i have just put the motor back together after a spun bearing, unfortunately this problem was happening before the bearing was spun. One other thing, it happens more often when rain fall or after a strong shower. Help :'(