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1989-1991 Chevrolet R3500
530 in Springs
1964-1964 Chevrolet Chevelle
1963-1963 Mercury Country Cruiser
Holley EFI Dominator EFI Engine Control Module - Wiring Harness - Ford 1034103 1989-1991 Chevrolet R3500When utilizing a Transbrake, it is mandatory to install either a relay or, our Transbrake input protection device. P N 554 128. This will protect the ECU from any flyback voltage when the Transbrake is released. Dominator EFI systems are sold "a la carte". The following must be purchased for a complete system: ECU (includes software and programming cable), Main Power Harness, Wideband Oxygen Sensor, Main Engine Wiring Harness, Injector Wiring Harness,
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