Bronco.com: Technical Reference: Wiring Diagrams Early Ford Bronco Wiring Diagrams (1966 - 1977)Early Bronco Wiring Diagram - T he 2.8L V6, as found in Rangers and Bronco II’s from 1983 to 1985, are saddled with a rather bizarre fusion of EFI and carburetion in the form of the EEC-IV controlled Motorcraft carburetor and TFI ignition. Some people choose to replace this ignition with an earlier Duraspark ignition. The stock “feedback carburetor” should also be replaced with an earlier non emission controlled 2. March-April 2003 I finally found a rear end! It is a Ford 8-inch rear with drum brakes from a 1977 Granada. The gear ratio is only 2.79, so I plan on getting terrific gas mileage.. The Ford F-Series is a series of light-duty trucks and medium-duty trucks (Class 2-7) that have been marketed and manufactured by Ford Motor Company since 1948. While most variants of the F-Series trucks are full-size pickup trucks, the F-Series also includes chassis cab trucks and commercial vehicles.The Ford F-Series has been the best-selling vehicle in the United States since 1986 and.