N40475 Chapter 8 Engine electrical systems A plug-together electrical system is available with the engine, providing the following choices from the engine connection:- Interconnecting cables of 12m lengths are standard. 3, 6, and 9m lengths are available as options. Optional harness to allow multiple instrument panels to be fitted. 12V or 24V operation. Instrument panels - main, auxiliary or digital, which may be used individually or in combination with a keyswitch panel.
Engine wiring looms The engine wiring loom connects the starter, alternator, breakers, electronic engine controller (ECM), electric stop, engine senders and injectors to a waterproof (IP67) multiway connector situated on a flying lead attached to the engine. The engine circuit diagram can be found at the back of this chapter. When working on the harness, always secure the harness in the original position with the correct clips and away from pinch points, heat, and sharp edges. The connectors are keyed to fit in only one direction, which ensures proper pin to socket alignment. Never force connectors, as they should fit together with minimal effort.
Connectors are designed to seal out dirt and moisture without the use of electrical grease. When servicing the harness, inspect the condition of the seals on the connectors. When pins are unused, be sure to use blanking plugs to protect the connector against dirt and moisture. Page 23