Why would a stick gearbox have a "neutral safety?" You sure it's not a reverse lamp switch?
Anyhow a neutral switch (auto) or clutch safety switch (stick) in a mopar goes ground---through switch--to one flag termianl of the start relay. The remaining flag terminal is the yellow "start" wire
Mopar neutral switches up through 68 or 9 had one terminal. After that they had three--middle terminal was neutral safety, outside 2 were for reverse lamps. In other words, 2 switches in one.
