Things Change.. Butters is now getting a 392

The OEM fan fuses are a 40 amp and 50 amp based on the diagram I have, so I would be surprised if they only pull 8 amps. Can't remember an OEM fan that pulls so little. I bet the OEM wiring is 10 gage or bigger, too.

There is a 10 amp fuse for the control side of the relays, maybe that is what you are referring to?
I actually misspoke.. factory pump is 8 amps. Good catch.. edited