Well... I jumped the fans to run all the time at one point. But, mind you, this is when my A/C wasn't working because I had no condenser (i.e. no Freon).So, with no Freon, the pressure sensor in the canister was unconnected. This is a safety that doesn't allow the compressor to engage when there is no/low Freon.
I unplugged it and connected the terminals on the plug with a short 10 gauge wire, and unplugged the relay that controls the compressor so it would never turn on but both fans would run all the time.
You can do the same wiring thing I did and not unplug the relay, but you will be running the A/C compressor 100% of the time. That... is a bad idea.