Well let me clarify my intentions...

I do have a flasher ****/switch to the right of column that works fine.

But my truck has an electric fan with a toggle switch in the spot above the ignition. The toggle switch works fine but I was thinking it would be cool to install a stock style switch, like the flasher switch with the black ****, and replace the generic toggle i have.

I felt the flasher switch might be the easiest to put in place there but open to thoughts.

 

The only problem with that flasher switch is finding a bezel to hold it in. I used that same flasher switch to operate a bed light but I had an extra harness with the bezel. It worked out good because I have a 79 column that has the flasher switch on the column so I didn't need the switch just the light.

 

Why not get an electric fan controller and eliminate the toggle switch all together?

 

Since it was not mentioned in the above, I can add the following to the WHY of the separate light bezel:

On the Custom Cab models with the sweep speedometer, there is only one turn signal indicator. It operates when either signal is used. This is normal for many cars from the 40's on. Also quite a few motorcycles.
Now, when the need for the hazard flashers was mandated (1966), it was determined that the was also a need to let the driver know when they were actuated.
On the base model F-series, there are two signal indicators on the lower part of the speedometer, this works well, as both will flash.
On the Custom Cab, since the indicator is wired to the power side of BOTH front signals, this won't work, as it won't illuminate if both signals are actuated. Therefore, a separate indicator lens is needed.
As Number Dummy stated, there are many different kits to allow your friendly dealer to retrofit said flashing device. The correct one was not always used, which is why some base models have the separate lens.

A side benefit of one signal indicator on the dash is that you can check ALL turn signal bulbs from the comfort of the driver's seat.
To wit:
Left turn selected, indicator flashes fast - rear bulb, left side is out.
Same, but no indicator, though flasher is heard at normal rate - RIGHT side FRONT bulb is out.
Use the opposite and check the remaining bulbs. Amaze your friends!!

Cosmo