I have used deep 6-point and 12-point sockets to remove hydraulic stoplight switches. It is getting hard to remember, but I think I used a 1-1/8 12-point, and don't remember the size of the 6-point. Perhaps 1-1/16?
It depends on the terminals on the switch. Some had nubs where you slid a female 1/4" blade terminal on from the side. Those could be installed with a shallow socket.
Others had long nubs where you used a female bullet terminal. Those stuck out enough that a regular depth socket might not be deep enough. Also common were screw terminals (female thread) that were long like the bullet terminals.
A brief search online shows 7/8" and 1-1/16" hex listings.
I have a socket and in fact used it about a month ago, did a disc brake conversion on a 62 Lesabre. It's not a Craftsman though, pretty sure it is cut for 2 different sizes, and works on oil pressure senders as well.