Garmin GSD 24 Installation Instructions Manual
GSD 24 Transducer Adapter
Installation Instructions
About the GSD 24 Transducer Adapter
WARNING
See the Important Safety and Product Information guide in the GPS device
product box for product warnings and other important information.
NOTICE
The GSD 24 adapter is not meant for use with a Garmin differential 8-pin
transducer. Do not cut a Garmin differential 8-pin transducer; instead, plug it
directly into the GSD 24 according to the GSD 24 Installation Instructions.
Use this adapter to connect a non-differential transducer, such as a legacy
Garmin/Airmar
®
6-pin transducer, to a GSD
™
24 sounder. In order to adapt
a non-differential transducer for use with a Garmin differential sounder, you
must cut the connector from your existing non-differential transducer and
connect the wires to the wire block inside the GSD 24 Transducer Adapter by
following these instructions.
Tools Needed
• Drill and
1
/
8
in. (3.2 mm) drill bit
• #2 Phillips screwdriver
• 3 mm flat screwdriver
• Cable ties (optional)
• Wire cutter
• Wire stripper
•
13
/
16
in. (21 mm) wrench
Mounting the Adapter
Selecting a Mounting Location
Consider the following conditions when choosing a location to mount the
GSD 24 Transducer Adapter.
• The adapter cable should easily reach the transducer connector on the
GSD 24 when mounted.
The adapter cable length is 24 in. (60.1 cm).
• The adapter should not be installed in a location where it is submerged in
water.
• The adapter should be located at least 6 in. (15.25 cm) from electrical
interference such as a motor.
• If there is not a mounting surface suitable for using the included screws,
the adapter can be secured to a structure using cable ties (not included).
Fastening the Adapter to the Mounting Location
1. Use the included template (page 19) to mark the pilot-hole locations.
2. Drill the two pilot holes with a
1
/
8
in. (3.2 mm) drill bit.
3. Install the included screws in the pilot holes, but do not tighten them flush
with the surface.
4. Place the GSD 24 adapter on the screws and slide it in place.
5. Tighten the screws until the device is securely fastened to the surface.
NOTE: You may find it easier to connect the wires with the GSD 24
adapter unmounted, and then complete the mounting process.
Connecting a Legacy Transducer to the Adapter
NOTICE
The GSD 24 adapter is not meant for use with a Garmin differential 8-pin
transducer. Do not cut a Garmin differential 8-pin transducer; instead, plug it
directly into the GSD 24 according to the GSD 24 Installation Instructions.
Preparing the Legacy Transducer
1. Cut the connector from a non-differential transducer ➊, as close to the
connector as possible.
➊
➋
➌
➍
2. Feed the cut end of the cable through the nut ➋ on the side of the housing
and pull it through the other side.
Do not tighten the nut at this time.
3. Use the wire stripper to remove about 3
1
/
2
in. (90 mm) of the outer cable
jacket ➌ and foil shield.
4. Use the wire stripper to remove about
1
/
4
in. (6 mm) of the insulation from
each internal wire ➍.
Tinning each of the stripped wires is recommended, but not necessary.
Connecting the Legacy Transducer Wires
Connect the wires to the wire block in the adapter using a 3 mm flat
screwdriver.
Consult the wiring table when connecting the wires. Specific examples of
many Garmin/Airmar transducer wire colors are provided on page 2.
Wire Block
Number
Wire Function
1
Depth +
2
Depth -
3
Shield
4
Ground
5
Temp*
6
XID
7
Speed power
8
Speed data
*If your transducer does not have temperature capability, you must install
a jumper between connectors 4 and 5 on the wire block.
Finalizing the Connection
1. After all the wire connections are secure, use a
13
/
16
in. (21 mm) wrench to
tighten the nut around the transducer cable.
When tightened correctly you will not be able to pull the transducer cable
out of the housing.
2. Place the lid on the adapter and secure it with the four captive Phillips
screws.
190-00789-08_0C.indb 1
11/8/2011 7:58:48 AM