I have never liked the safety switches often found on rider-mowers. In
fact, in the past I have disconnected them as a nuisance.

I bought a used rider this summer, and wouldn't you know - I was
knocked backwards over the seat back onto the ground by a low tree
limb. I wasn't hurt too badly, but the damned mower kept on going
across the street and across my loving neighbor's yard until it hit
one of his bushes. No damage was done except to my ego.

With my new insight, I have checked and find no sign of any cut-off
switch under the seat. I expected to find one - disconnected or
otherwise not working. Okay, what would be the easiest way for me to
create and install such a switch? Can someone reply with some advice
and particulars?

Thanks

Duke

PS the limb has been removed.