Sure, I can go take a picture later, it is just like the one shown in the below link for the 67-69. Yes, I believe the switch is for the start up.
It could be, they don't show a picture of a 73-74, but you are right, it sure doesn't look like the 70 the guy told me it was. It looks much more like the 75-76. I wonder what the 73-74 looks like?