1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 290Get this manual

1999 Mercruiser HI-Performance GM 377 EFI Engine Service Manual, Page 290

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FUEL INJECTION DELIVERY SYSTEM
CAUTION
When installing battery, be sure to connect POSITIVE (+) battery cable to POSITIVE (+) battery terminal FIRST, and NEGATIVE () battery cable to NEGAT