For fan control, I’m using “Delta Current Control” (DCC) model FX45 for my electric fan control and am happy with it. I have Vintage A/C and have left the FK45 unit to control the fan and did not use the installed Vintage control that turns the fan on when the A/C is turned on.
65 Fastback, 351W, 5-speed, 4 wheel discs, 9" rear, R&C Front End.