Running the fan at speed will not keep any temps down. Once the water reaches a certain minimum temperature the thermostat closes and water circulation stops. It doesn't matter how much air is going through the radiator, it just ain't getting any cooler.
That's becasue there is a minimum desired operating temp, just as there is a maximum.
The coolant temperature is maintained by the thermostat, which cycles as the coolant heats and cools. Too cool, stop flow through the radiator, allow it to heat up. When hot, start flow, allow it to cool down. repeat as necessary.
The fan kicks in if it keeps getting hotter, and the assumption is that the bike isn't moving, so no air through the radiator, so air has to be forced through the radiator. The fan's ONLY purpose is to move air through the radiator when the bike isn't gathering air by its own motion. If the fan kicks on while at speed, you have other issues.
Still, I know where the relay is. I just ain't tellin' 'less you have a better reason.
(But if you look in my GenI Fairing and Cowl removal thread you'll see it.)
There's no point in your switch, though. Running the fan might keep it at two bars instead of three if you're in traffic that's moving, but not moving well. But you'll be getting
more heat on yourself, not less, as that forced air exiting the radiator comes up onto your legs and torso. If the bike's going faster than that, then it's probably going fast enough to cycle the thermostat, in which case the fan adds nothing. If the bike's going slower, the fan on automatic is sufficient for engine cooling, and your exposure to the fan blast will be less. I defy you to say that the air coming out of a radiator carrying 200-degree water is more comfortable than air exiting a radiator carrying 220-degree water.
