[Aarongriffey]

I would not recommend a knife switch.
I worked for a collector that bought a ‘56 Victoria that the Screen Actors Gild bought new for Ronald Regan when he was president of the Screen Actors Gild.
It had a knife switch on the battery and it caused trouble to the point that the owner got very disenchanted with the car until I figured out that the pivot for the knife would often times not conduct well.