Trim Position Sender Connections; Installing The Sterndrive Unit; Battery Connection; Troubleshooting Shift Problems - 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.
a
ORG/WHT
BLK

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.
Battery connection
sealant
5. Apply sealant to the exposed terminals and electrical connections.
Tube Ref No.
Liquid Neoprene
25

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

BLK
BRN
GRN
PNK
RED
WHT
LT or LIT
90-8M0099748 eng DECEMBER 2015
b
BLK
BLK
Description
Description
Wire Color Abbreviations
Black
Brown
Green
Pink
Red
White
Light
Digital gauge connection shown, analog similar
a - Engine harness bullet connectors
b - Transom assembly bullet connectors
49918
Where Used
Battery terminal connections
Where Used
Exposed terminals and connections
BLU
GRY or GRA
ORN or ORG
PPL or PUR
TAN
YEL
DK or DRK
© 2016 Mercury Marine
Installation
Part No.
Obtain Locally
Part No.
92- 25711 3
Blue
Gray
Orange
Purple
Tan
Yellow
Dark
Page 2B-19