Engine Electrical Systems; Engine Wiring Looms - Perkins M300C Installation Manual

N40475

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.
Chapter 8
Page 23