Power Cable Extension
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You can use transducer extension cables between the transducer cable and the power cable.
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Transducer extension cables are available from your local Garmin® dealer or from buy.garmin.com.
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Transducer extension cables are available in 3 m (10 ft.) and 1 m (3 ft.) lengths.
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You can add up to 6 m (20 ft.) of length using a combination of these extension cables.
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You can cut and splice wire onto the positive and negative wires of the power cable to extend them (Power Cable Extension by Splicing Wires).
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You can add transducer extension cables between the transducer cable and the power cable and you can also cut and splice wire onto the positive and negative wires of the power cable to extend them (Power Cable Extension Using Transducer Extension Cables and Splicing Wires).
Power Cable Extension by Splicing Wires
You can cut and splice wire (not included) onto the positive and negative wires of the power cable to extend them. Refer to the table below for the appropriate wire gauge for the length of this extension. Use marine-grade connectors or solder and water-resistant heat-shrink tubing when splicing the power wires.
You can extend the power wires up to 11 m (36 ft.) by splicing an extension. If you add an extension that exceeds this length, the transducer may not receive the voltage required to function properly.

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Item |
Description |
|---|---|
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Splice |
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20.3 cm (8 in.) |
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Maximum extension 11 m (36 ft.) |
Power Cable Extension Using Transducer Extension Cables and Splicing Wires
For maximum cable length, you can both add transducer extension cables between the transducer cable and the power cable and add wire splices onto the positive and negative wires of the power cable. You can extend the entire length of the cable to span up to 15 m (50 ft.) when using this combination of extensions.
The appropriate wire gauge used to extend the power wires in this combination depends on the length of transducer cable extensions used and the voltage provided by the power supply. Refer to the table below for the appropriate wire gauge for your installation needs.
The total extension length should not exceed 15 m (50 ft.). If you add extensions that exceed this length, the transducer may not receive the voltage required to function properly.
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Length of Transducer Extension Cables Used |
Power-Wire Gauge for 12V Systems |
Power-Wire Gauge for 24V Systems |
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Up to 3 m (10 ft.) |
8 AWG |
10 AWG |
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From 3 m (10 ft.) to 6 m (20 ft.) |
6 AWG |