Battery cable wiring diagram

Discussion in 'Electrical Stuff' started by msballin, Jul 19, 2016.

  1. msballin

    msballin Member

    251
    May 30, 2008
    Islip Terrace, Long Island
    2000 340 Sundancer
    Twin 7.4L Horizons w/ Hurth V-Drives
    I've 4 batteries in my engine compartment...I'm assuming one for each engine, one for the genset, and one for the 12 volt systems (vacuflush, stereo, refrigerator, etc.) On several occasions over the past 8 years, while away from shore power, one of the engines starts and the the other, not so much. Upon using the emergency start button on the dashboard, the breaker switches on the main panel in cabin shut off along with both engines. Is there a wiring diagram I can reference to see if the wiring is faulty? Thank you.
     
  2. Bt Doctur

    Bt Doctur Well-Known Member

    Aug 21, 2010
    New Jersey
    Ex SRV 240 Weekender twin
    in between
    Start with 1 battery connected and see what works and what dosent.Disconnect battery 1 and hook up battery 2, Then battery 2, same way with 3,and 4
    You wiring may be combined tripping the breakers.
    You may need to seperate the engines and their wiring by having 1 battery dedicated to each engine , a dedicated battery for the genny and a dedicated house battery system
     
  3. JimG

    JimG Well-Known Member SILVER Sponsor

    Nov 4, 2008
    Southern WV
    2007 310 DA
    Kohler 5ECD
    Twin 350 Mags
    Raw Water Cooled
    V-Drives
    Looking at the schematics for your boat, the port battery set are in parallel and are for the port motor and your house 12V. On the starboard battery set, one is for the generator and one for the starboard motor.
     
  4. msballin

    msballin Member

    251
    May 30, 2008
    Islip Terrace, Long Island
    2000 340 Sundancer
    Twin 7.4L Horizons w/ Hurth V-Drives
    Thank you. I will give this a try.
     
  5. msballin

    msballin Member

    251
    May 30, 2008
    Islip Terrace, Long Island
    2000 340 Sundancer
    Twin 7.4L Horizons w/ Hurth V-Drives
    JimG...I just saw that on a schematic downloaded from searay. Question, If I may...are you familiar with where the "connection" is between the starboard and port batteries that would enable the emergency start to occur? I assumed, before I saw the schematic, the two in parallel were the port and starboard starting batteries. Apparently, that is not the case. Kind of curious why the port and house battery would be joined together. Your thoughts?
     
  6. JimG

    JimG Well-Known Member SILVER Sponsor

    Nov 4, 2008
    Southern WV
    2007 310 DA
    Kohler 5ECD
    Twin 350 Mags
    Raw Water Cooled
    V-Drives
    There is a relay on your bulk head that combines the starboard battery with the port batteries for emergency start. The port and house batteries are joined and charged by the port alternator. The starboard battery is charged by the starboard alternator. The generator battery is charged by the converter.
     
    Last edited: Jul 19, 2016
  7. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    I think the 2000 340 is set up like my 330. You should have two batteries wired in parallel under a seat that are your starboard engine and house bank. Then a port engine battery in the bilge and the generator battery. The three systems are separate except for the alternator charging as mentioned.

    Your generator should be able to be used to power your Converter/charger if you ever run down your starboard/house bank and the Emergency Start "bridge" does not work for some reason.

    For what it is worth, I replaced my port side single battery with two 6v golf cart deep cycles in series. Then I moved the house battery feed wire from the starbord battery switch over to the port battery switch. So now I have a two battery starboard bank (engine only), and a high capacity port/house bank. So I can go a long time on battery power with no start issues (like many great lakes area boats, I do not have a generator)
     
  8. msballin

    msballin Member

    251
    May 30, 2008
    Islip Terrace, Long Island
    2000 340 Sundancer
    Twin 7.4L Horizons w/ Hurth V-Drives
    JimG..Great information. Thanx much! Creekwood...set up for me is a bit different. Port and house battery in series. All astern of engines. JimG is spot on w his assessment. Thanks all for your advice. Greatly appreciated.
     
    Last edited: Jul 20, 2016
  9. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Your port and house are not in series. Wiring batteries in series doubles voltage, meaning your bank would be 24volts. The Port bank is not connected to the starboard bank directly. They each go to their own battery switch. If the same alternator charges both banks, it will be going through an isolator that keeps them separate as related to power consumption.
     
  10. msballin

    msballin Member

    251
    May 30, 2008
    Islip Terrace, Long Island
    2000 340 Sundancer
    Twin 7.4L Horizons w/ Hurth V-Drives
    Thank you Creekwood. I may have misquoted JimG. The port and house battery are joined and charged by the port side alternator. This does make sense as while away from the dock and disconnected from shore power, the house battery is continually charged until it needs to be used. If either of you have a picture of what the relay on the bulkhead it may be helpful for me to understand the wiring. Is it possible this relay is fused in some way?
     
  11. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    It's not a relay it's an isolator. As I said each bank is separate. The emergency start switch temporarily bridges the two banks (in parallel) so you can start your engines using both banks if needed. I have a Sea Ray wiring diagram for my 330 I will email to you if you PM your email address. I think that the wiring for the batteries on yours is pretty much the same as mine.
     
  12. JimG

    JimG Well-Known Member SILVER Sponsor

    Nov 4, 2008
    Southern WV
    2007 310 DA
    Kohler 5ECD
    Twin 350 Mags
    Raw Water Cooled
    V-Drives
    The emergency start relay/solenoid is not fused. Here is your bulk head...
     

    Attached Files:

    Last edited: Jul 21, 2016
  13. Brandon Latif

    Brandon Latif New Member

    11
    Nov 17, 2020
    2003 searay 340 Sundancer
    8.1 horizon
    branevan124@gmail.com , can you send me that wiring diagram ? Thanks
     
  14. Creekwood

    Creekwood Well-Known Member GOLD Sponsor

    Apr 26, 2009
    Oakville and Georgian Bay, Ontario
    '97 330 Sundancer, Raymarine C80 suite with radar, Mercury 310 Hypalon w/8hp Yammie 2stk
    2X 454 carbs w/ vDrives
    Yours will not be the same as mine, but here are links to your manuals on Sea Ray's web site. Note that there seems to be a 340DA and a 340SDA on the site. The last link is to the supplement for your year that includes the wiring at the end.
    https://s3.amazonaws.com/srweb-pvt-...nuals/2003__2003-340-SUNDANCER-A-(340SDA).pdf
    https://s3.amazonaws.com/srweb-pvt-...-manuals/2003__2003-340-SUNDANCER-(340DA).pdf
    https://owners-resources.searayweb....003_340 Sundancer_1999-2003_340 Sundancer.pdf
     
  15. SKybolt

    SKybolt Well-Known Member GOLD Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    1988 460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    While @JimG is spot on with his info, on a side note you mention in the past 8 years? Are your batteries that old? If so you might want to think about replacing them or at the very least have them tested. You can take them to Autozone or the like and they will test for free. When you do replace them, if you have room, you might want to replace the port bank with a single 8D if possible, if not two group 31's at least.
     

Share This Page

Show Sidebar