firebird fuse box question

[lxfirebirdxl]

Hi I recently made a post about my car not cranking, and came up with another question. In the fuse box there's a slot for ignition but theres nothing in it. The car ran like this and I was driving it just fine, but after looking at the fuse box there's nothing in the spot. What goes there if anything. Thanks. Formula firebird 305 v8

 

[melsg5]

Nothing there in many GM cars. It's a hot pickup when the engine is running. A typical use for it on a carbureted car that is being converted to an electric choke is to run a fused wire from the that point in the fuse box to the choke coil. If you have the owners manual it would have a fuse box layout.