you can get the same switch for less from any auto parts store. You need the Honda accord fan switch.
It doesn't make the bike run cooler. The engine coolant temp is regualted by the thermostat. What this switch does do is turn the radiator fan on sooner at a lower temp and shuts off at a lower temp as well. It can help keep the temps better regulated. The OE sensor waits until the coolant temp is higher before the fan kicks on which means it's got to work that much ahrder to get the temp back down. Then the OE sensor also shuts off soooner which in turn means it'll have to turn on again sooner to control the temps.
I hope that makes sense