3.1.3.3 Serial Communication Harness
The Serial Communication Harness is only required in Twin Screw applications or when an external
trolling valve actuator (9001) is utilized. The Harness connects the Port Processor to the Starboard
Processor.
• One Harness required per two Processors.
• The Harness is plugged at both ends.
• Refer to MMC-288 References and Parts Source for available harnesses
3.1.4 Tach Sensor Harness
There are two Tach Sensor Harnesses available:
1. The first is the AC Coupled Sensor Harness, which is designed for inputs from items such as
Mechanical Senders, Magnetic Pickup Sensors, the Alternator AC Stator Terminal or the negative Coil
Terminal.
2. The second Harness is designed for Active Sensors with an Open Collector output, such as Hall Effect
Sensors.
• This Harness is only required when Active Synchronization is required.
• One Harness per Processor is required.
• The Harness is plugged on one end only.
Determine the source of the tachometer signal, which can be provided by a mechanical tachometer
sender, magnetic pickup, alternator’s pre-rectified output, the negative side of the coil (gasoline
engine) or an engine’s electronically produced signal. Refer to SER-161 Engine Tach Sender Req..
3.1.5 Additional Harnesses
(Refer to the Parts List in MMC-288 References and Parts Source)
The following lists the various Harnesses that plug into the Processor:
3.1.5.1 Throttle Harness
• One Harness required per Processor.
• There are 4 types of Throttle Harnesses: Voltage, Current, PWM (Pulse Width Modulation),
and Frequency.
• Most Throttle Harnesses are plugged at the Processor side only.
• Some Throttle harness types are available with plugs on both ends.
3.1.5.2 Clutch Harness
• One Harness required per Processor.
• The Harness consists of 2 two-conductor cables.
• The cables supply power to the Ahead and Astern Clutch Solenoids
• All of the cables in the Harness are the same length. Therefore, order a length that will reach
all of the previously mentioned items, if required.
3.1.5.3 Clutch/Troll Harness
• One Harness required per Processor.
• The Harness consists of:
• 2 two-conductor cables for Ahead and Astern Clutch Solenoids.
• 2 two-conductor cables for Troll ON/OFF and Troll Proportional Solenoids.
• The Power for the clutches and troll are supplied by the Processor’s power source.
• All of the cables in the Harness are the same length. Therefore, order a length that will reach
all of the previously mentioned items, if required.
NOTE: Some transmissions only utilize one solenoid for troll, therefore, the harness would consist of only three
cables.
To Next Page
Loading...
Need help?
General
