2007 sea ray sport 205 5.0 liter reverse polarity :/

Discussion in 'Sport Boats' started by bbluebanshee, Mar 17, 2019.

  1. bbluebanshee

    bbluebanshee New Member

    Jun 13, 2007
    Well, in the process of getting ready to sell my boat, I mistakenly hooked up some jumper cables from my boat to my truck....reverse polarity, and tried to start the boat before I realized my mistake.

    Now I get a click. Engine will not turn over, and no noise from fuel pump. Doing a little research, this may look to be a costly mistake.

    Figured I would ask here for some possible troubleshooting tips, to narrow down where the problem/problems may be.

    Family code for engine is

    Any help is appreciated!! Thanks.
  2. paulswagelock

    paulswagelock Well-Known Member

    Oct 25, 2010
    2018 SDX 270 OB 300 Verado
    Verado 300
    There is a main engine breaker, does that need reset?
    OllieC likes this.
  3. Espos4

    Espos4 Active Member

    Jan 1, 2017
    Long Island NY
    2007 240 Sundeck
    350 MAG Bravo 3 W/DTS
    There’s a good chance that several other fuses have blown too.

    Break out your ohm meter and start checking them.
  4. OllieC

    OllieC Active Member

    Mar 11, 2013
    Sara Belle
    2005 Weekender 215
    Mercruiser 5.0 mpi, Bravo III
  5. Stingrayaxe

    Stingrayaxe Member

    Oct 29, 2015
    Crystal Lake
    2009 SeaRay 205 Sport
    2008 GMC Envoy
    5.0 Merc Alpha 1
    There is the main breaker on top of the engine and a smaller breaker attached to the port side of the transom. (Right side as you are looking at it). Why is it when you are installing a battery and you drop a wrench it always make contact with both battery terminals? :)
  6. scoflaw

    scoflaw Well-Known Member

    Aug 10, 2011
    cape cod mass
    1999 Powerquest legend 260 sx
    502 mpi Bravo 1
    Mefi motors have 3 small fuses on top by the ECM. Could also be the 90 amp block fuse at the starter.
    Bust out that DVM.

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