85 340 - dashboard gauges tarboard engine short out/what is this device?

Discussion in 'Classic Sea Rays' started by Bill Gau, May 29, 2020.

  1. Bill Gau

    Bill Gau New Member

    7
    Jul 28, 2019
    1985 340 sundancer with crusader 454's
    Crusader 350
    Hi
    I was testing my engines and electronics getting ready to put boat in the water. with the engines off, when I turn on the nav lights the starboard engine related gauges no longer light up and all the gauges pin to the right. any ideas? also, can someone tell me what the device is in the attached image. it is connected to the battery switches and has a heat sink. Is it related to the battery charger? thanks 20200528_134809 (1).jpg 20200528_134809 (1).jpg
     
  2. dwna1a

    dwna1a Well-Known Member GOLD Sponsor

    Apr 23, 2012
    James River
    88 Weekender 300 "Seahorse"
    Twins 350
    Bill it almost looks like a old inverter. I will look at my neighbors 34' when I get to the boats. Maybe he has one as well
     
  3. Bill Gau

    Bill Gau New Member

    7
    Jul 28, 2019
    1985 340 sundancer with crusader 454's
    Crusader 350
    Great thank you
     
  4. Chris-380

    Chris-380 Well-Known Member

    805
    Jan 20, 2019
    Pontoon Beach IL
    380 Sundancer 2000
    454 Horizon w/V drives
    Looks like a battery isolator to me
     
  5. RollerCoastr

    RollerCoastr Well-Known Member

    Nov 15, 2007
    Cedar Point, OH / Miami, FL / MacRay Harbor, MI
    1997 400DA
    340HP 7.4 Mercruiser Bluewaters
    Garmin 741, 742, 8212, 24HD, Intellian I2
    1999 280BR
    Twin 250HP Merc 350 Alpha Ones
    Me too.
     
    Chris-380 likes this.
  6. Chopperdr.

    Chopperdr. New Member

    26
    May 8, 2019
    Mississippi
    1969 sea ray pachanga
    450 hp. Sbc
    Mercruiser alpha 2nd gen.

    2002 dodge 3500 Cummins pulls them
    Custom 350 sbc
    450hp.
    Mercruiser alpha 2nd gen.
    Battery isolator for sure
     
    Chris-380 likes this.

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