Ed,
I installed the kit mentioned. It used the 3 position toggle switch. I mounted my toggle to the left of the column under the dash. I did not want the add-on turn signal switch hanging off my column. If you do a lot of city driving like I do, you may find that the toggle under the dash is not real fun. I found myself leaning forward all the time to activate it and then shut it back off. I am in the process of installing a column mounted turn signal...even though I don't want too!