electrical issue sounds like a bug zapper in the dash

My altentor and e-brake dash lights are on, and when i’m driving they both start to flikker at the same frequency around 3000rpm, along with that bug zapping sound. i just checked voltage output at the battery and it’s a steady 13.8V’s, with full load.
Also the when the dash lights flikkering so does the daytime fog lights.

check if the buzzing is coming from the ecu. under the passenger side dash like under the glove box under a trim peice on an s14 anyways i had same weird buzzing before but have no idea wtf it was from and then it just stopped

yah i changed the altenator and all the electrical issues went away. I guess that all it took was 200mV to fuck the car up.