[rotorwrench]

This was the first year that Ford started using a dash mounted switch. The previous years only had the ignition involved with the switch on the steering column. Bat, Access, and Coil are likely the only terminals. Start function was independent well into the early 50s. The accessory power was primarily for the instrument panel. Battery is power in and coil is ignition only. Lighting was all still independent of the ignition switch. The radio sets had their own fuse if installed so it could be added to the battery terminal or accessory if there is room on the terminal. Most cars that had radio would be connected to the battery terminal so that the it could be independent from other current draws.