Installation Manual

Twin Disc, Incorporated

Electrical Installation

Split Single Lever Control Head Stations in Twin Engine Installations

Some dual-engine installations use split Single Lever Control Heads at control stations rather than Dual Lever Control Heads. For such installations, one split lever harness and one dual lever harness are used. See Figure 32.

PORT STBD

TO EC300

STARBOARD CONTROL

STARBOARD

1020617

HARNESS, WIRING

DUAL LEVER

PORT

TO EC300

PORT CONTROL

1021458

HARNESS, WIRING

SPLIT LEVER

Figure 32. View of Split Single Lever Harness Wiring

Install the Control Head harnesses as follows:

Note: The Control Heads may be removed from the dash if this facilitates making the connection. If they are removed, then reinstall them after the connections have been made.

Note: Provide enough length in the harness to allow removal of the Control Heads in the future.

EC300 Marine Control System Installation Manual #1024168

71

Electrical Installation

72

Twin Disc, Incorporated

2.

3.

Refer to General Electrical Installation Guidelines for harness routing criteria.

1.

Connect the female circular connector end of the Split Lever harness with the two circular connectors to the port Single Lever Control Head.

Note: For each Control Head connector, align the large connector key with the large keyway and push the connector into place. Then, turn the connector’s collar until the engagement snap is felt.

4.

Route the Split Lever harness to the Starboard Control Head.

Connect the circular connector end of the Split Lever harness to the starboard Single Lever Control Head.

Connect the circular connector end of the Dual Lever harness to the male circular connector of the Split Lever harness at the Port Single

Lever Control Head.

5.

6.

7.

Ensure that the port and starboard single lever Control Heads are firmly mounted.

Route the Dual Lever harness to the EC300 Port Control and Starboard

Control.

Note: It is desirable, especially on single station vessels, to route the port and starboard harnesses as far apart as possible.

This minimizes the odds of both harnesses being accidently damaged at the same time allowing continued, but reduced, control of the vessel.

Connect the Dual Lever Harness plug labeled “Port” to the J1 receptacle of the Port EC300 Control.

8.

9.

Connect the Dual Lever Harness plug labeled “Starboard” to the J1 receptacle of the Starboard EC300 Control.

If applicable, repeat steps 1 through 6 for connecting additional Control

Stations using J2 for the second Control Head and J3 for the third Control

Head.

10.

If J2 and/or J3 are not used, install a connector kit into these receptacles to seal the connector. See System Drawing for Connector Plug Kit p/n.

11.

Secure all harnesses to a supporting structure with clamps or cable ties at 406 mm (16 in.) intervals.

EC300 Marine Control System Installation Manual #1024168