Mercury MERCRUISER Service Manual

Trim Position Sender Connections
Connect the trim position sender wires from the transom assembly to the engine harness. Use the orange/gray wire for analog
gauges and the orange/white wire for digital gauges.
Digital gauge connection shown, analog similar
a - Engine harness bullet connectors
b - Transom assembly bullet connectors
Installing the Sterndrive Unit
Refer to the appropriate Mercury MerCruiser sterndrive service manual for procedures related to the installation of the
sterndrive unit.
Battery Connection
IMPORTANT: The sterndrive must be installed before connecting the battery. Refer to the appropriate Mercury MerCruiser
sterndrive service manual.
1. Ensure that the power trim pump, the MerCathode controller, and the accessory wiring (if equipped) are properly
connected to the battery terminals.
2. Connect the battery cables to the battery by first connecting the positive (+) battery cable (usually red) to the positive (+)
battery terminal. Tighten the clamp securely.
3. Connect the negative (–) battery cable (usually black) to the negative (–) battery terminal. Tighten the clamp securely.
4. Ensure that all of the battery terminal connections are tight. Spray the terminals with a battery connection sealant to help
retard corrosion.
Tube Ref No.
Description Where Used Part No.
Battery connection
sealant
Battery terminal connections Obtain Locally
5. Apply sealant to the exposed terminals and electrical connections.
Tube Ref No.
Description Where Used Part No.
25
Liquid Neoprene Exposed terminals and connections 92- 25711 3
Troubleshooting Shift Problems
If hard shifting, chucking, or racheting is encountered when shifting into forward gear, refer to the remote control manual or to
the appropriate sterndrive service manual for troubleshooting information.
Wire Color Code Abbreviations
Wire Color Abbreviations
BLK Black BLU Blue
BRN Brown GRY or GRA 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
BLK
BLK
BLK
ORG/WHT
a
b
49918
Installation
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 2B-19

Mercury MERCRUISER Specifications

General

Brand	Mercury
Model	MERCRUISER
Category	Engine
Language	English