Fan Motor Power Leads

Hi all, I am new to ATVs, have a 2001 Rancher ES 350 (which I bought used recently). Just noticed that the cooling system fan is unplugged and I can't figure out which wire harness it goes to. Sounds like a simple question I know, but after spending a lot of time looking around and underneath, and buying a maintenance guide, I'm still at a loss. I know from reading posts that the fan rarely comes on, but i am sure it should at least be plugged in. Appreciate the help.

Thank you.