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Mercury MerCruiser 3.0 MPI User Manual

Mercury MerCruiser 3.0 MPI
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STARTING AND ELECTRICAL SECTION - 7
Page 4 / 22 90-899883183 DECEMBER 2007
Boat Harness and Installation Connections
Engine Harness and Accessory Power Supply
If the engine harness is used to supply power for boat accessories (lights, blower, pumps, stereo,
or any other electrical device using the engine wiring harness for power), the maximum accessory
power available on the 14‑pin wiring harness is 15 amps. Relay kits are available to provide
additional accessory power at the helm. This maximum is fuse‑protected and must be observed.
If the fuse opens, the engine will stop and will not restart until the fuse is corrected.
Boat Wiring
NOTE: Twin engines are treated as two single engines in the same boat. No twin engine disconnect
is required.
SINGLE STATION
25043
DUAL STATION
25041
On dual helm installations, use the extension harness from the engine to the lower station.
Use the Y‑adapter to connect the upper and lower stations.
Use the proper length harness from the Y to the lower station.

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Mercury MerCruiser 3.0 MPI Specifications

General IconGeneral
BrandMercury
ModelMerCruiser 3.0 MPI
CategoryEngine
LanguageEnglish

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