Installation Manual

Electrical Installation

Twin Disc, Incorporated

Communication Harness (J10) Installation

The Communications Harness (J10) provide the main interface between two or more EC300 Controllers. The vessel may have one or more EC300

Controllers located in or near the engine room. The Communication Harnesses

(J10) are fully pre-fabricated and plug into the J10 connector at each EC300.

The J10 connectors contains all contacts and sealing plugs that are required to fill the connector. Sealing plugs must be installed into all unused connector contact positions in order to maintain the integrity of the connector.

Cruise mode and Express mode support a feature in which the speed of all engines in the system can be synchronized. For the synchronization feature to function, information must be passed between all controllers in the system. A communication harness assembly is required to be connected between all

EC300 Controls. A typical harness assembly consists of 2 controller harnesses;

1 communication harness; 2 T-connector receptacles; and 2 terminating resistors. The harnesses are available in various lengths and are terminated with the proper connectors.

This section contains the following sub-sections:

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Dual Engine Communication Harness Installation

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Multiple Engine Communication Harness Installation

122 EC300 Marine Control System Installation Manual #1024168