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.

The Craftsman version of the oil pressure sending socket is the Craftsman 41385 (specialized 3/8-inch drive oil pressure switch and sending unit socket).Oooo.. that's a new one for me.
We sold it as a "oil pressure sending unit socket" as a model 2738 Indestro:
Indestro 2738 2797 3.8 dr oil pressure switch socket - universal joint - 1972 Indestro catalog No. 55 pp 6
3/8" drive x 1-1/16" deeply-broached 6-point socket.
Manufactured by all the major tool makers at that time.
Without it, your odds of removing or installing a sending unit without cracking the top were quite slim on some models. Other guys found they never had a use for one (on some engines they can removed with a pipe wrench.)
Curious that Craftsman called it a "stop light switch socket" - first time I've seen it called that.
@gordyzx9r I didn't know you were a GJ'er. Glad I could help you out with the socket!I finally found one of the Craftsman versions...they're like hens teeth. Kind of odd, Craftsman didn't engrave the 44052 part number on it. The only markings are =1 CRAFSTMAN = V =. So, if that sticker is gone...then most people would probably just assume it's some odd Craftsman 1" socket.