As a separate question, (and I can search for this if its complicated to explain) why do people do an electric fan swap? I know one advantage is being able to shut it off for water crossings.
I can think of three reasons. One you just mentioned, the next is (maybe) a power increase since you are not using engine power to run the fan. the counter argument to that is you have an extra load on the alternator, which puts an extra drag on the engine. So that's why the 'maybe' on the power increase. In my experience, you won't notice a seat of the pants whiplash event after the swap.
The third reason is that it will pull more air at low engine rpms than the pulley driven fan. So it helps to keep cooler at crawling speeds and rpms, (which is harder for an auto trans truck to do). Also, the warm up in winter is quicker.
I used a flex-a-lite twin fan unit. they list one specific for the tacoma, but I got the universal unit which was identical in size and specs, but $100 less, came in choice of red, blue, or black (the taco specific one is black only), and was very easy to mount with the universal kit it came with. It is thermostatically controlled and you can vary the 'on' temp as well. I've been very happy with mine.
I did not switch it to the dash. My past experience with that is it can get turned off inadvertantly. So, if I encounter a big water hole Id have to pull its fuse, which you might think would be pain.... but if I drive up to a big water hole, Im getting out and probing it, looking for winch anchors in case I get stopped in there, and generally trying to think ahead. Hopefully, I'll remember to pull the fan fuse.