I'm considering getting a pair of these - one for each fan, fusing them independently at 20a, and running 10awg, or maybe even 8awg wiring. The wiring in there now is only at most a meter long - it runs from the alternator, which is on the lower passenger side on the 2J, to the wheel well right beside it where the relay is mounted, to the fans on the radiator, and grounds on the radiator support directly underneath the fans.
I need to find some nice, heat resistant and flexible wire that comes in various colors, too. I'm less than impressed with the stuff I can pick up at the local electronics supply place here. They have various thicknesses and colors, but nothing that's very flexible.
PS: I'm a big proponent of overkill, especially if it can save me headache time.