Are you
also inferring that the higher fan speeds (and therefore higher loads on the alternator) can also help raise the coolant temp even more as well, since the engine must work harder to spin the loaded alternator?
REGARDLESS of the above, an interior mounted, MANUAL OVER-RIDE
switch (NOT just a 'jumper wire') for the fan is looking better ALL of the time,
IF that is even possible with our ECMs/systems.