Im in the middle of installing a taurus electric fan for my '93 4runner. I've got the fan and radiator in - ready for wiring. I'm electrically challanged - so what is the advantage of having a relay in the circuit?

 

You won't burn down the rig.

Bamachem has a good write-up on his electric fan install and the controller he got...eliminated the need for expert wiring tech. Sounds like what you need.