Motorguide 24v mode doesn't work?

[C1Todd]

I bought a used fish and ski around 4 or 5 years ago. The trolling motor has a 12/24 switch. It has always been in 12v mode as I only have one battery. The battery is getting weak and I need to replace it. So I thought I would buy two and convert to 24v. The problem is with 2 new batteries hooked up and the switch on the 24v setting. I don't get anything. I can still get the 12v mode to work. Any ideas? Thanks in advance for any help.

 

[Silvertip]

Re: Motorguide 24v mode doesn't work?

You probably have the wiring wrong. To get things right for you, I need to know the following:

1) How many terminals are there in the trolling motor plug. If you say two, you cannot have both 12 AND 24v operation. You will need either three or four depending on the motor.

2) How many wires are there in the cable that runs to the trolling motor FROM THE RECEPTACLE (not the batteries).

3) Is there a switch in the vicinity of the trolling motor receptacle that says "Run/Charge" or "12/24".

4) How many wires do you have run from the batteries to the trolling motor receptacle. If you say two -- you again get the NOT button. You need either three or four.

Armed with that info and a little more description of how you have things wired NOW, I can provide pictures of what you need to do.

 

[C1Todd]

Re: Motorguide 24v mode doesn't work?

Thanks for your help. Here are your answers:

1.) 3 terminals

2.) 3 wires from receptacle

3.) No switch with that label. However the panel containing the receptable outlet has one switch that appears to do nothing. There is a 12/24 switch on the pedal, but it doesn't help.

4.) 4 wires from batteries

 

[Marc III]

Re: Motorguide 24v mode doesn't work?

Check for 12 and 24 volts at the receptacle. One of the three is supposed to be a common ground. It sounds like it was changed from a 4 prong OMC setup to a 3 prong. I'll bet your now wired wrong at the batteries. Check behind the receptacle and see what you got there. The 12/24 switch by the receptacle is now unneeded along with one of the 4 battery wires.

At the batteries the 12v part will be connected to battery #1's posts. A heavy jumper will connect from the pos post of battery #1 to the neg post of battery #2. The pos post on #2 will be your 24v connection. I'd mark that one with white tape at each end.

 

[Silvertip]

Re: Motorguide 24v mode doesn't work?

Here ya go! Even though you have four wires (two red, two black I assume) running from the batteries to the front, you really only need three of them. Eliminate the switch panel wiring as its not needed.

 

[C1Todd]

Re: Motorguide 24v mode doesn't work?

Thanks alot...

 

[J BLANK]

Re: Motorguide 24v mode doesn't work?

Silvertip, would you have that same wiring info for a (3) bank charger?

 

[Silvertip]

Re: Motorguide 24v mode doesn't work?

Since the other diagram had no on-board chargers, I'm a little confused about what you want. But if its a wiring diagram for hooking up a three bank on-board charger, the diagram below should help. It shows three batteries but only a two bank charger. If you have a three bank charger, the third pair of outputs goes to the start battery in the diagram below. Just ignore the battery switch and associated cables if you don't have one. On board chargers simply connect to each battery -- just observe polarity.

 

[fishhunt3]

Re: Motorguide 24v mode doesn't work?

Hi Silvertip,
I am having 24v issues too.
I have a motorguide fw-fb, it has the 3 way switch on the motor for constant, 12, or 24.
Answering your questions from this initial post, I have 3 wires coming from the 2 batteries - 2 hot and one ground. They provide 12v and 24v coming out of the nema l5-30 power socket.
However, the connector from that socket to the foot pedal only has two wires - hot and ground. I get normal 12v operation, but anything on 24 volt seems to run at the same as 12v - level 5 (the rotator has 1 through 5 on it for speeds).
I tried moving one of the wires going from the socket to the foot pedal so it was connecting to the 24v plug in the socket - that gives poor results, everything seems really slow. I assumed that the three way switch in the foot pedal was providing 24 v, and then switching down from that source to 12 for the constant or 12v switch settings - guess that's not the case.

Any thoughts would be appreciated.
The difference between my set up and this other persons, is that I only have 2 wires going to the foot pedal, but three as he does at the power socket.

Thanks in advance!