To get it charged for tomorrow morning, I'm by-passing the fuse. Just have a connection from the terminal right into the half fuse holder.

If I can't find the part (and that's driving me nuts - I've lost 2 items in the last 30 years - one of which I found 6 months later) I was thinking of just by passing the fuse with another clip.

I'm guessing the primary problem with that is if I put the wrong clip on the wrong terminal, I can ruin the battery?