Wiring Diagram For A 1972 Plymouth Scamp? - the12volt Wiring Diagram For A 1972 Plymouth Scamp? - Does anyone know where I can find a wiring diagram for a 1972 Plymouth Scamp, if I'm not mistaken the 1972 Dodge dart should basically be the same. 1973 was a transistion year for both of these cars so the wiring is different.. 1970 - 1976 Duster - Scamp & Valiant - Classic Car Wiring 1970 - 1976 Duster - Scamp & Valiant . 1970 though 1976 Duster and Valiant variants and 1964 through 69 Barracuda are "A" body cars.; All diagrams include the complete basic car (interior and exterior lights, engine bay, starter, ignition and charging systems, gauges, under dash harness, rear clip, etc). Mopar Wiring Diagrams - MyMopar - Dodge Plymouth Mopar Wiring Diagrams 1972 to 1976: The wiring diagrams below are from various internet sources and individual contributors. All diagrams are individual files based on model year and vehicle.