Humminbird Switch 531871 1_A User Manual

1
531871-1_A  
Unit Switch  
Thank You  
Thank you for choosing Humminbird®, America's #1 name in fishfinders. Humminbird® has built its reputation by  
designing and manufacturing top-quality, thoroughly reliable marine equipment. Genuine Humminbird® accessories  
offer the opportunity to upgrade and expand the capabilities of your Humminbird® product.  
Your Humminbird® is designed for trouble-free use in even the harshest marine environment. In the unlikely event that  
your Humminbird® does require repairs, we offer an exclusive Service Policy - free of charge during the first year after  
purchase, and available at a reasonable rate after the one-year period. For complete details, see the Warranty section  
included in this manual.  
Contact our Customer Resource Center at 1-800-633-1468 or visit our Web site at humminbird.com.  
Installation Overview  
Following are instructions for the installation of this accessory. Before you start installation, we encourage you to read  
these instructions carefully in order to get the full benefit from your Humminbird® accessory. If you find that any items  
are missing from your installation kit, call our Customer Resource Center at 1-800-633-1468 or visit our Web site at  
humminbird.com.  
Unit Switch  
The Unit Switch comes with all the necessary hardware to allow you to connect your two control heads to one  
transducer. The switch is intended for installation on the console, and will work well on almost any boat.  
NOTE: The Unit Switch will not allow the six beam-3D transducer to be shared.  
Supplies: In addition to the hardware supplied with your Unit Switch, you will need a hand drill with various size bits,  
a Phillips screwdriver, an adjustable wrench, and a 3 amp fuse.  
700 SERIESNOTE: If you are installing the Speed Sensor accessory (optional), you will also need to purchase the  
Sonar/Speed Y-Cable. Contact our Customer Resource Center for details at 1-800-633-1468 or visit our Web site at  
humminbird.com.  
Installation  
Before installing the Unit Switch, gather all the parts you will need, and make sure that the planned location of the  
Unit Switch will allow you to connect the two control heads to your transducer. Perform the procedures in the  
following sections to install the Unit Switch on your boat.  
1.  
Locating the Unit Switch Mounting Position  
There are two ways to find the mounting location, as follows:  
Switch Panel: If your console already contains a switch panel with an available slot, slide the Unit Switch into the  
slot until it snaps into place. Then skip ahead to procedure two.  
In-Dash: If your console does not have a switch panel or a pre-made mounting location, you will need to create  
one yourself.  
Mounting the Switch  
Boat Console  
Switch  
© 2011 Humminbird®, Eufaula AL, USA.  
All rights reserved.  
 
3
531871-1_A  
Unit Switch  
Connecting the Control Heads to the Switch and the Transducer  
1
2
Cable Connector  
Unit  
Switch  
Cable Connector  
Control Head  
Control Head  
Route connector to  
the transducer  
Connecting the Connector Clips  
to the Unit Switch  
Switch  
To connect the connector clips to the Unit Switch:  
Connector Clips  
1. From underneath the console, plug the two connector clips from the switch assembly into the two outlets of the  
Unit Switch.  
NOTE: Connecting the connector clips to the Unit Switch does not require a specific order; either connector will work with  
either outlet.  
3.  
Connecting the Power Cable  
Connect the Unit Switch power cable to the boat’s fuse panel (usually located near the console). If you must  
connect to a battery, connect to a battery switch (not included).  
1a. If a fuse terminal is available, use crimp-on type electrical connectors (not included) that match the terminal on  
the fuse panel. Attach the black wire to ground (-), and the red wire to positive (+) 12 VDC power. Install a 3 amp  
fuse (not included) for protection of the unit. Humminbird® is not responsible for over-voltage or over-current  
failures.  
Connecting to a Fuse Panel  
or...  
1b. If you need to wire the control head directly to a battery, obtain and install an inline fuse holder, a 3 amp fuse  
(not included) for the protection of the unit, and a battery switch (not included). Install the battery switch using  
the instructions provided with it.  
NOTE: If you are unable to obtain a battery switch and are forced to connect the power cable directly to the battery, be  
aware that this may cause a slow loss of power over time. See procedure five, Powering Off.  
NOTE: Humminbird® is not responsible for over-voltage or over-current failures. The control head must have adequate  
protection through the proper selection and installation of a 3 amp fuse.  
2. Secure the cables with cable ties (optional).  
© 2011 Humminbird®, Eufaula AL, USA.  
All rights reserved.  
Your Unit Switch is now ready for operation.  
 
4
531871-1_A  
Unit Switch  
4.  
Switching Between Units  
Perform the following procedures to alternate between the control heads connected to your Unit Switch:  
1. Make sure both control heads are powered on.  
2. Press the Unit Switch to engage the desired control head.  
5.  
Powering Off  
It is important to make sure all accessories (switches, control heads, etc.) are powered off in order to avoid possibly  
draining the battery. To make sure your Unit Switch is disengaged, follow the steps below.  
If your Unit Switch is connected to the fuse panel,  
1. Power off your boat to disengage the switch.  
If your Unit Switch is connected to a battery switch,  
1. Turn the dial of the battery switch to the OFF position.  
If your Unit Switch is connected directly to a battery,  
1. Power off your boat.  
2. Remove the Unit Switch wires from the battery.  
© 2011 Humminbird®, Eufaula AL, USA.  
All rights reserved.  
 

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