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Help hooking up trolling motor on 2004 HD201

Bought a Minn Kota 70# 24 volt with a electrical pin attached that has 2 pins.
Hurricane has a 4 pin plug mounted up front with two sets of red and black wires that run to back battery area.

*My question is.....I need to replace my 2 pin to a 4 pin to match the boat plug/receptacle.

* secondly do I hook both black wires and both red wires to the battery posts not being used to make both batteries a 24 volt battery ( + and -)

* I assume they put two sets of wires to the plug so you can use one set if running a 12 volt motor and both sets if going 24 volt?.

I already have  two 12 volt batteries back there with a switch I keep on both and a trickle charger to 
maintain them.  It is going to be tight but I will buy two new batteries to run the trolling motor but it is going
to be very crowed back there. I will then buy a 24 volt charger I can keep plugged in when the boat is on
the lift.  THANK YOU...appreciate any help or advise you folks can give me.


  • cjjjdeck
    cjjjdeck Member, Moderator Posts: 1,872 ✭✭✭✭
    I have a Minnkota Terrova 80 24 volt trolling motor bow mount on my boat.  There are only 2 wires required to hook up the motor due to the batteries being run is series.  Below is the plug and socket my dealer used, yes, it is a 3 wire plug...... yes, it only has 2 wires hooked up to it.  The dealer and I prefer the twist lock design over the push-in 2 wire MInnkota plug/socket design that was available at the time.  Minnkota may offer a better design now.

    Picture 2 of 7

    Below is a simplified wiring diagram for a 24 volt trolling motor:

    2012 SD237 I/O Mercruiser 5.0L MPI ECT/ Bravo 3
    2012 Load Rite Elite Tandem axle trailer

  • itsmeboat
    itsmeboat Member Posts: 3
    I appreciate your answer, and this is exactly how I have mine.  The questionI I had was why two sets of #8
    wire from front to back.  It is a 2004 and a Minnkota mechanic gave me the answer.  He said they no
    longer do that but at one time you could by a trolling motor that would run 12 or 24 volts so you could hook up one 
    set to a 12 volt and the other set to  24 volt setup. That makes since. The only answer I got that makes sense.
    Not sure why you would need or want to switch your trolling motor back and fourth from 12 or 24 volts.
    I hade a very old Sears Ted Williams outboard that could be 5, 71/2, or 12 horsepower. All the switch really did was
    retard the magnito.
  • cjjjdeck
    cjjjdeck Member, Moderator Posts: 1,872 ✭✭✭✭
    Interesting explanation, appreciate you sharing it!

    It's also good to know there is another set of wires going to the bow just in case you may want a bow mount fishfinder 
    2012 SD237 I/O Mercruiser 5.0L MPI ECT/ Bravo 3
    2012 Load Rite Elite Tandem axle trailer