Garmin GSD 26 Instruccion De Instalación

• The sounder must be mounted in a location with adequate 

ventilation where it will not be exposed to extreme 

temperatures.

• The sounder should be mounted so that the LEDs are visible.
• The sounder should be mounted so that the power and 

network cables can be easily connected.

• The sounder should be mounted so that the transducer cable 

can be connected. If required, transducer extension cables 

are available through your Garmin dealer.

If you are mounting the bracket on fiberglass with screws, it is 

recommended to use a countersink bit to drill a clearance 

counterbore through only the top gel-coat layer. This will help to 

avoid any cracking in the gel-coat layer when the screws are 

tightened.
Stainless-steel screws may bind when screwed into fiberglass 

and overtightened. Garmin recommends applying an anti-seize 

lubricant to the screws before installing them.

Before you mount the device, you must select a mounting 

location and determine the mounting hardware needed for the 

surface.
NOTE: Mounting hardware is included with the device, but it 

may not be suitable for the mounting surface.

Place the device in the mounting location and mark the 

location of the pilot holes.

Drill the appropriate pilot hole for one corner of the device.

Loosely fasten the device to the mounting surface with one 

corner and examine the other three pilot-hole marks.

Mark new pilot-hole locations if necessary, and remove the 

device from the mounting surface.

Drill the appropriate pilot holes for the other three marks.

Secure the device to the mounting location.

When connecting the power cable, do not remove the in-line 

fuse holder. To prevent the possibility of injury or product 

damage caused by fire or overheating, the appropriate fuse 

must be in place as indicated in the product specifications. In 

addition, connecting the power cable without the appropriate 

fuse in place will void the product warranty.

Do not force a cable into its port. Forcing the cable can damage 

the pins. If the cable is properly aligned, the cable should 

connect easily.

Before you connect the sounder to the network, power, and the 

transducer, you must mount the sounder (

) .

Route the cables using the appropriate tie wraps, fasteners, 

and sealant to secure the cables along the route and through 

any bulkheads or the deck.

Install the locking rings on the marine network and power 

cables (

) .

Connect the bare-wire end of the power cable to a 12 Vdc 

power source and to ground.

Align the notch on the end of the power cable with the power 

port on the device, and press the cable into place.

Tighten the locking ring.

Repeat steps 4 and 5 for the network cable, and connect the 

device to a transducer (

) .

Select an option:
• If your boat is equipped with a GMS 10 network port 

expander, connect the network cable to an available port 

on the GMS 10.

• If your boat is not equipped with a GMS 10 network port 

expander, connect the network cable directly to the 

network port on your chartplotter.

When routing cables through your boat, it may be necessary to 

drill holes to route the cables. Cable routing grommets can be 

used to cover cable installation holes. You can purchase 

grommets from your Garmin dealer or directly from Garmin at 

 .

You must install cord grip plugs in any unused cord grip to make 

sure water cannot enter the transducer wiring block area and 

damage the sounder.
The terminal blocks are not removable.

Remove the terminal block lid from the sounder.

Select an option:
• Feed a sensor cable through the small cord grip 

À

, and 

pull the cable into the terminal block area.

• Feed a transducer cable through one of the large cord 

grips 

Á

 on the housing, and pull the cable into the 

terminal block area.
NOTE: Do not tighten the cord grip.

Before you connect the wires, consult the wiring diagrams 

) to select the proper wiring 

configuration for your transducer and the wiring tables 

) for specific examples of Garmin 

wire colors.

Connect the uninsulated section of each wire to the terminal 

block using a 3 mm flat screwdriver.

Connect the bare shield wire to one of the two ground posts 

under the terminal block using a #2 Phillips screwdriver.

After connecting the wires, use a 24 mm (1 in.) wrench to 

tighten the nut around the transducer cable.
When tightened correctly, you should not be able to pull the 

transducer cable out of the housing.

Insert a cord grip plug into each unused cord grip.

2