Battery Disconnect

[doug.nichols]

I see a number of historic threads on this topic but am still having difficulty. I intend to install a Snyder battery switch on my 29 roadster, using the Snyder mount that is intended to be located on the starter/flywheel bolt. I also purchased the lead wire suggest for this setup. Even with pictures from old threads, I can't figure out the wiring diagram needed to do this work. This is a 12V negative ground setup. I know this can't be as hard as I am making it.
Can anybody furnish a little diagram for an electrical dunce?

Thanks.