Are you checking at wire end or are you checking at plug. Could be bad connection of wire to back of plug or bad connection between wire end and battery connector. Not likely a break in wire .
First time for me if that is the problem. Fuse is good, black side of wiring shows continuity, close to 0 resistance when checked with meter. Red side shows open 1, which means a break in the wiring.
Has anybody ever experienced this with the power cable that runs from the battery to the trolling motor power plug? what would cause the wire to break since it runs as wrapped cable under the boat?
We are all born ignorant but one must work really hard to remain stupid. -Ben Franklin
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Any day I'm fishing is a good day, regardless of what I catch.
Are you checking at wire end or are you checking at plug. Could be bad connection of wire to back of plug or bad connection between wire end and battery connector. Not likely a break in wire .
Proud Member of Team Geezer
Charlie Weaver USN/ENC 1965-1979
i've never had a wire break myself, so this has me scratching my head. I have had wires become corroded at the terminal and not work but never a problem with the wire itself.
I have a connector strip instead of a plug. The MK Ultrex 112 did not come with a plug but had two wire connectors. So I removed the female plug connector and installed a connector strip when I bought this trolling motor.
I removed the cable connections from the connector strip and tested from the connector at end of the cable back to the battery terminal.
I first tested for voltage between the two ends of the cable, which showed 0. I then tested for voltage at the batteries. I had 39 volts between the fuse and battery ground. I tested both sides of the fuse, although I really only needed to test the far side of the fuse to check the fuse.
On the negative wire (black), testing between the two connectors on the wire, the meter showed .038 which is what it shows when you touch the tips of the meter cables together. So that wire is good.
One the positive wire (red), testing between the two connectors on the wire, the meter showed 1 which is what it shows when the tips of the meter cables are not touching each other. Or a open line.
On the red wire I did two measurements. One was from the battery connection to the opposite side of the fuse. That showed .038. Then I checked from that side of the fuse to the end connector. That showed 1 or open connection.
I also tested on the wire itself instead of the connector, in case the connector was corroded, giving a bad connection.
I don't know what it could be, other than a broken wire. But I have never had a broken wire and do not know what would have caused it to break.
We are all born ignorant but one must work really hard to remain stupid. -Ben Franklin
PROUD MEMBER OF TEAM GEEZER
Any day I'm fishing is a good day, regardless of what I catch.
do you have a Trolling Motor Circuit Breaker with a manual reset in your boat ???
here is a diagram of what I am talking about !!!! and a picture of the breaker !!!
https://www.comstedt.se/wp-content/u...mp_Breaker.pdf
Last edited by strmwalker; 07-31-2020 at 05:02 PM.
"What if you woke up today with only the things you thanked God for yesterday"
"Life without God is like an unsharpened pencil - it has no point. "AMEN"
If you have checked the wire itself inside/in front of the connector and get no reading you definitely have a open. What puzzles me is you seldom if ever have a break in multistrand wire that is completely through as in a break. Think back and see if you remember doing any kind of repair work lately where that wire might have gotten cut. Usually on a multistrad wire you woul have some broken and others not but still get a reading if not quite where it should be.
Proud Member of Team Geezer
Charlie Weaver USN/ENC 1965-1979
We are all born ignorant but one must work really hard to remain stupid. -Ben Franklin
PROUD MEMBER OF TEAM GEEZER
Any day I'm fishing is a good day, regardless of what I catch.
There has been no repair work. The batteries are in the console of the pontoon. The wires are in a black plastic protector that goes through a hole in the bottom of the pontoon, runs inside the pontoon guide and then across the front of the boat where it goes through a hole to the terminal block.
This is what has me puzzled, it would be hard for something to break the wire but all tests indicate the wire is broken. I'm going to look at the cable cover from where it leaves the pontoon guide to where it enters the front of the boat to see if I can see any damage or cuts in it. I'll be doing that a little later when it is cooler outside.
I have ordered replacement wiring from Amazon which should arrive tomorrow. I also ordered a new 50 amp circuit breaker. From my test the circuit breaker is not the problem but it is easier to install it and test if that is the problem than install all new cabling.
We are all born ignorant but one must work really hard to remain stupid. -Ben Franklin
PROUD MEMBER OF TEAM GEEZER
Any day I'm fishing is a good day, regardless of what I catch.
I would now say stretched. I check the wiring under the front of the pontoon. The exposed wire from the pontoon guide rail to where it goes into the bottom of the pontoon is less than one foot in length. I could not see nor feel any cuts or abrasions in the exposed wiring.
I gave it a gentle pull, and the wiring was very tight, no slack in it.
I measured again to ensure I had not made any mistakes. This time I also measured from the wire body to the inside of the wire terminal. I received the small reading so there is a good connection between the wire and the terminal connection.
Much as I hate the thought, I am going to need to run the wiring from the batteries to the front terminal strip. I don't know which is worse, loading the pontoon on the trailer and doing the work from the ground or leaving the pontoon in the water and doing the work from the side of the slip. It's a pain either way as I have ran transducer cables using both methods.
We are all born ignorant but one must work really hard to remain stupid. -Ben Franklin
PROUD MEMBER OF TEAM GEEZER
Any day I'm fishing is a good day, regardless of what I catch.