There is no fuse (fused link instead) for the fan. First I would check the relay under the passenger side heater air box, that was the culprit on my fan failure a couple years back. You can jumper with a paper clip between relay pin # 87 (high speed fan) or pin # 87Q to pin 30 12 Volts, hot all the time. If pin 30 is not hot all the time check the fused links on drivers side from battery.
I have a 95 and just recently had a problem with my fan not working. After monkeying with it for several hours, i just bought Roe Racings fan kit (125$) which bypasses the factory relays and power source to turn the fan on and off based on a pre programmed temp / setting. Worked great.
Good luck with it as it can be a pain. More and likely it is a relay though, which Dodge no longer sells. But you can get it at Napa for about $15. Ed