7/28/2023 0 Comments Manico 3 prong trolling motor plug![]() ![]() ![]() ![]() Your batteries are not in series or parallel. Regardless what you do some rewiring is necessary. The reason I suggested the two wire system is a) four wires are unnecessary and b) it eliiminates a long run of cable that causes voltage drop. You now have 24 volts going to the corresponding terminals at the receptacle.ĥ) Wire the trolling motor wires to the corresponding terminals on the plug. Tape the ends of the wires as they won't be used.ģ) Now connect the red & black pair as shown in the following diagram.Ĥ) Make a jumper that connects the positive of the left battery to the negative of the right battery. One pair is connected to each battery.Ģ) Totally disconnect the orange and black pair at the battery but DO NOT cut or remove them from the boat. Here is what you do.ġ) There should be two pairs of wires (usually one red & black and one orange & black) going up front. Note that you only need two wires since the series connection is made at the batteries rather than at the connector. Do you currently have a mating plug for this receptacle? If you do, the diagram below shows the simplest way to do this. It is just a four terminal plug and it was included because the boat manufacturer felt it was necessary to accommodate 12 volt, 24 volt, and combination 12/24 volt motors which are scarce as hens teeth new these days. People tend to ignore the situation in a dual battery situation and hence get wrapped around the axle with this mismatch situation.They have nothing to do with higher level fishing boats. In a single battery system you quickly notice a loss of performance and the battery gets replaced. That's not what this discussion is about. No system - series or parallel can operate proplerly if one battery cannot hold or accept a full charge. Obviously the lesser capacity of the two must still have specs higher than the current draw of the electrical system. Having owned many diesel vehicles with parallel batteries I can say also from experience that as long as you keep two "good" batteries in a parallel system, they will work just fine. The other battery didn't kill it nor did the mismatch. In your experience you very likely had one "bad" battery. A bad battery in a parallel setup may indeed kill the other battery but that is not a condemnation of a parallel setup or mismatch. In a parallel system - yes they will equalize. ![]() A partially discharged battery in a series string cannot kill the other battery. As is the case of the diesel truck - one of the batteries was dead (as in a bad battery). Measuring voltage with two batteries that are not equally charged will of course measure lower than 12.6 because of the "equalization" I spoke of. It will NOT start a totally dead/bad vehicle battery. In the case of a jump start pack, there is obviously a mismatch in capacity (AHr) ratings yet a small jump start pack will start a partially discharged vehicle battery. The automotive article you reference is not a realistic conclusion about mismatched batteries. What the colors are on the receptacle is not of concern as you just need to match the terminals. WARNING: If your motor wire colors are different than those shown you need to contact the manufacturer to determine which is +24 and which is +12 and which is ground. Red is typically +24 volts, orange is typically +12 volts, and white or black is typically ground.Ģ) Now match the motor plug terminals to the terminals in the receptacle and mark those as +12, +12 and ground respectivelyģ) Set up the batteries like shown in the diagram below. They will typically be red, orange and black, or red, orange and white. So here is what you need to do:ġ) Look at the plug on the motor and draw yourself a picture noting the wire colors for the three terminals. How this switching gets done can take on many forms. Or is there a 12/24/Run/Charge switch on the panel at the bow of the boat. Little details such as is there a 12/24 selector switch on the foot pedal of the motor. And just exactly what motor are we talking about? They are not all the same. ![]()
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