Here is the solenoid switch wiring diagram for the 1949 Oldsmobile. The schematic is simple with several components and connections. Among those components we can see parts like; solenoid, contacts, cranking motor, overrunning clutch, plunger, and shift lever return spring. Simple as it is, we will still need to study them comprehensively if we want to perform a proper wiring work. Click on image to view it larger in a new tab.