I don't have any extra relays. I took the Hi power to the oem fan from the ccrm and tied it into the 12v in to the PWM controller. So the fan control out from the MS3 triggers the factory CCRM relay sending power to the PWM controller. The generic PWM out table in the MS3 is what controls the fan speed via the PWM controller.That's where I go the idea as well. I saw he used the fan power from the CCRM. I was debating on just wiring the PWM controller straight to the battery instead so I wouldn't have to do the extra relay that he did.