Humminbird 987C SI COMBO Control Head Installation, Series has a wide variety of configurations

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The 900 Series™ has a wide variety of configurations.

987c

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	6	Accessory Bus
1	Sonar Transducer w/Temperature	Speed through water	6
2	Optional “Y” Cable	GPS Receiver	7
3	NMEA 0183	WeatherSense®	8
4	Power	SmartCast® Wireless Sonar Link	9

5Temperature

Inside the boat there is often a channel or conduit used for other wiring, this can be used to route cables. Be sure to route the cable as far as practical from the antenna cable of VHF radios or tachometer cables to reduce the possibility of interference. The transducer and GPS receiver cables should not be cut, and care should be used not to damage the cable insulation.

Basic installation tasks that you must perform include:

•Installing the control head (choosing either gimbal or in-dash mounting)

•Installing the transducer (choosing either the transom mount or trolling motor mounting method)

•Installing the GPS Receiver (if included)

•Installing the Speed accessory (if included)

•Testing the complete installation and locking the transducer position.

The supplied Humminbird® transducer uses a two piece kick-up mounting bracket. In addition, if you purchased a 987c SI Combo model, you will want to install the included GPS antenna.

NOTE: Accessories may require a separate purchase. You can visit our website at www.humminbird.com to order these accessories online or contact our Customer Resource Center at 1-800-633-1468.

CONTROL HEAD INSTALLATION

You have two choices for mounting your 900 Series™ control head:

•Gimbal mounting, where you use a surface on the boat, such as the dash, to mount the control head so that it can be tilted up or down, or

•In-dash mounting, where you cut a hole in the dash in order to allow the control head to be recessed into the dash, and the control head cannot be moved after mounting.

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