Have 90 Miata (new to me) Prob.: idiot light "flickers" at accelerating high rpm, then goes out.
My 'read' (without comprehansive analysis) is worn brushes, anyone agree?
Since the battery is a gel type, can the regulator output voltage be trimmed to 14.2v (or is it already)???? Anyone using an external ("smart" three stage) regulator for proper gel charging: bulk, acceptance then float?