The main components of a 454 Mercruiser engine wiring diagram are: the starter motor, distributor, ignition switch, coil, relay, solenoid, fuel injector, vacuum advance, alternator, and water temperature sender.. View and Download PCM 454 service manual online. Ford and Chevrolet based marine engines. 454 engine pdf manual download.
7.4L 454 Mercruiser Manual - Free download as PDF File (.pdf), Text File (.txt) or read online for free. The document is a service manual for GM V-8 454 CID and 502 CID marine engines. It provides procedures for disassembly, inspection, assembly and adjustment to repair and tune these engines. It warns of hazards and safety precautions when working on electrical, ignition and fuel systems.. Logged Print Pages: [1] « previous next » SoCal Jet Boats Tech Talk Engine Mechanical / Electrical 454 electrical wiring diagram Gen 4.