The Auto Cool III is rated at 125 amps and fused at 150 amps.
It has Fail Safe to turn fans to full RPM with a small switch on the dash.
A/C fan speed control with a small pot on the side of the of the controller.
Radiator temperature will over ride the A/C fan RPM.
This controller is made with stainless and brass hardware.
The case is powder coated for long life in BLUE OR GLOSS BLACK.
FAN and GROUND terminals are 10-32 studs.
You can find the PDF install data on this site at MORE/PDF.
Case size: 4.7 X 4.5 X 2.2 height