90-8M0063595 DECEMBER 2011 © 2011 Mercury Marine Page 1 / 5
SMARTCRAFT DEPTH TRANSDUCER
WIRING CONNECTIONS
IMPORTANT: This document guides our dealers, boatbuilders, and company service personnel in the proper installation or
service of our products. If you have not been trained in the recommended servicing or installation procedures for these or
similar Mercury Marine products, have the work performed by an authorized Mercury Marine dealer technician. Improper
installation or servicing of the Mercury product could result in damage to the product or personal injury to those installing or
operating the product.
NOTE:
After completing installation, place these instructions with the product for the owner's future use.
Depth Transducer Dirty Water Explanation and its Limitations
A depth transducer is a device that converts variations in one energy form, into corresponding variations of another energy
form. Acoustical depth transducers produce sonic pulses through water to provide an indication of the depth and will show
other reflective variations in the water. The sonic pulse from a transducer is a cone shaped projection.
Depth transducers may produce erratic readings of the depth when the water quality is degraded by reflective materials such
as refuse, mud, oil, or physical objects in the water; plants, animals, air bubbles or turbulence, reducing the transducer
efficiency to lock onto a bottom depth return signal. These conditions are referred to as dirty water. When a depth transducer
encounters this condition, the return echo reflection signal from the dirty water can cause an unstable depth reading, or a
depth indication that is not accurate.
A depth transducer reading in clean or dirty water conditions, can change rapidly, possibly compromising the vessel because
of conditions underwater any time the vessel is underway. The vessel operator is responsible for understanding water
conditions where the vessel is navigating. The vessel operator should become familiar with the body of water by referring to
nautical charts or communications with other vessel operators, and not rely on the depth transducer only.
Depth Transducer Installation
NOTE: These depth transducers are specially manufactured to be SmartCraft communication compatible.
a - In hull
b - Through‑the‑hull
c - Transom mounted
Install the depth transducer following the instructions provided with the depth finder.
Wire Color Code Abbreviations
Wire Color Abbreviations
BLK Black
BLU Blue
BRN Brown GRY Gray
GRN Green ORN or ORG Orange
PNK Pink PPL or PUR Purple
RED Red TAN Tan
WHT White YEL Yellow
LT or LIT Light DK or DRK Dark
Depth Transducer Wiring Connections
NOTE: The transducer wire harness connections are assembled at the factory. However, situations may occur where the
wire harness must be removed from the connector to pass through an opening smaller than the connector. When installing
the wires into the connector, they can only be pushed into the connector one way. Align the wire terminal with the tabs inside
the connector.
1. Route the transducer cable to the engine.
17-501-01 rev.02
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