Your post seems to be stuck in internet hell, not visble in modern view, and can't be replied to in classic.
Here's the post I tried to make in "classic".
Testing a cutout...
You don't even need any tools. After shutdown, disconnect the battery-side wire from the cutout.
Is there a spark when you touch the battery wire back against the terminal?
Other way would just be to leave the wire off, (with a wrap of insulating tape for safety), and see if the battery still goes dead.
Here's the post I tried to make in "classic".
Testing a cutout...
You don't even need any tools. After shutdown, disconnect the battery-side wire from the cutout.
Is there a spark when you touch the battery wire back against the terminal?
Other way would just be to leave the wire off, (with a wrap of insulating tape for safety), and see if the battery still goes dead.