This type would require at least two or three.
One. For Pos, switched to un-hook/hook-up from ongoing to bateery bank, charge controller ect,...
Two. For the brake. Conecting Pos and Neg together.
This would require the switch #1 to be turned first and that this switch be before the # 1 in line. Diodes also in the Neg. side of things for propper current flow.
Three. optional for the Neg. side of things.
But this can also be done using only one but that requires Diodes and propper wiring methods. (simular to the "pull to stop" switch I used in mine).
The better and more right way is shown below!