Jon, I checked my shop manual for '48 to '51 and if you look at the posted diagram from Tim, it is almost identical. Where his shows to headlights, mine shows to dimmer switch which is likely the same thing. Brake light (or stop light) is where his shows it to be. At the rear of the switch on the bottom, mine shows to ammeter. Tail lights and park lights are where Tim's diagram shows. This also coincides with my wiring diagram for the harness for my '53 3600. I checked my light switch and it is also marked as to where things go although mine may be aftermarket. Good luck and hope this helps.
