Ok. So, I dug a little deeper....
That post is OK for pics and some information but does not speak to the most important question for me which is:
WHICH switch do I get/buy?
So, the answer is this:
IF you have a 91-95 pickup without the intermittent wipers, that would mean you have a NON SR5 truck. I am not sure all of the different models but I know that ONLY SR5 trucks came with intermittent wipers AND ONLY SR5 trucks have the tilt wheel option.
Now, within the SR5 model, you had a Cruise Control OPTION. So, in the SR5 model, you have a Cruise (I have heard that you CAN retrofit cruise but I don't care for it so not in my scope) and Non Cruise Wiper Switch available.
You will need the Non Cruise Wiper Switch which has a built in intermittent circuit board. In other words, you do NOT need a control relay that attaches to the ECU (that is on earlier trucks though from what I understand).
You WILL need to go through the steps of removing the old switch from the harness, removing the old switch, installing the new switch and then hooking the switch into the existing harness.
There it is.
As soon as get my switch from the yard, I will do a write up. I think it should be in the facts section.
$35-50 and some time. Not too bad for such an upgrade.
FYI...you CAN use a wiper switch from a same year 4 runner. You will just have a Rear Wiper control that, well, controls nothing.