Wiring Schematics Distributor Kit Wiring Diagram J1939 to NEMA2000 Wiring MEFI 4 MEFI 4 Engine Controls Schematic 4.3L - 5.7L MEFI 4 ECM Circuit Board Layout (5.7-6.0-8.1L) MEFI 4 Engine Controls Schematic 6.0L MEFI 4 ECM Engine Wiring Diagram 8.1L 5.7L Wiring Harness Schematic (472605) MEFI 5 MEFI 5 Engine Controls Schematic 6.0L MEFI 5 Wiring Harness 5.7L MEFI 5 Engine to Boat Wiring Schematic MEFI 5 ECM Pinout MEFI 7 MEFI 7 ECM Pinout