Ford Model A Turn Signal Wiring Diagram. You can get them at places like Napa or here. 1993 FORD F150 2DR PICKUP wiring information.
Click image to enlarge. TYPICAL WIRING DIAGRAM WITHOUT COWL LAMPS beginning in February 1929. Since your Model A Ford did not come from the factory with turn signals you must consider if you wish to have them on your car.
You have the knowledge or diagrams of where wiring fuel lines brake lines other than Model A etc.
The unit is called the Truck-Lite. Model A Turn Signal Kit Installation Guide Creative Connections Inc. Headlight switch wiring layout for a 1961 Falcon. If not the structure wont work as it ought to be.