Bringing up an old topic. My 2002 fan isn’t working. I made a bullet style connector and went from red/white wire to the blue/white wire on the fan switch in the left side of the back of the radiator and the fan started right up. Does this mean my fan switch is bad? I have another bike can I test the fan switch? Meaning can I check to see if that one is good before I pull it and swap it into my bike?
Yup, fan switch dead.
If the other bike runs, start it and wait to see if the fan comes on.
You'll have to get it up to nearly midway on the temp gauge before the fans will kick in.
Alternatively you could just buy a new fan switch.
Murphs does them for $63
https://murphskits.com/oem-fan-switch/