Use the process of elimination, you know the fan is good, now you should test the heat sensor. when the bike is cold the heat sensor should not let power past it to the fan, but when the bike is warm then the sensor should then let the power through, so test it either with a test light or an ohm meter! If the sensor is bad then thats the problem if not then check the wiring diagram to make sure there is nothing else on the same circut! If you need further help just drop me a line!
Clymer should be able to help you confirm good/bad. Keep the temp sensor jumped out and then try to bypass relay?
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