I would be installing a temp sender/switch in a radaitor hose or put a fitting in the radiator tank so that the thermo only swicthes on when needed. Otherwise its constatly on. This would take your car longer to warm up and will be on when not needed such as driving on the freeway etc. It is also bad as you want a certain temp in the cooling system. The ideal for my ca is 93 degress. So i have a switch i think ranges from 90-95 degress (Oil is at the right temp, fuel vauporizes properly etc)