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Mercury MerCruiser MCM 454 Mag MPI

Mercury MerCruiser MCM 454 Mag MPI
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MCM MODELS - BRAVO AND BLACKHAWK DRIVES SERVICE MANUAL NUMBER 23
Page 2A-12 90-861326--1 MARCH 1999
5. Connect wires to MerCathode controller assembly as shown. Apply a thin coat of Quick-
silver Liquid Neoprene to all connections.
22232
a
b
c
d
a-ORANGE Wire - From Electrode On Transom Assembly
b-RED/PURPLE Wire - Connect (Other End) To Positive (+) Battery Terminal
c-BLACK Wire - From Engine Harness
d-BROWN Wire - From Electrode on Transom Assembly
6. Connect battery cables to battery by FIRST connecting positive (+) battery cable
(usually RED) to positive (+) battery terminal. Tighten clamp securely. Then, connect
negative (–) battery cable (usually BLACK) to negative (–) battery terminal. Tighten
clamp securely.
NOTE: Spray terminals with a battery connection sealant to help retard corrosion.
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