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Posts: 477
Location: Iowa | I finally got my Terrova with I-Pilot delivered this week. Went out and installed it tonight. Plugged it in..........nothing. Got out the voltage tester, four wires feeding plug. But they were both 12 volt instead of 24. I go back and look at batteries. They are wired single, for 12 volt. I just bought this boat last winter, and never checked that. It had a 24 volt trolling motor on it already, so I assumed it was wired correct. It was running off of 1 battery the whole time I've had it. I can't believe I never ran it out of battery. I wired it for 24 volts and all is good now. Moral........don't assume the guy that owned your boat before you did, knew what he was doing when installing electronics, or anything else. I'm just glad that was the only problem, since I have waited 3 weeks for the trolling motor to get to my house. The first one got lost during shipping!! |
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| Good tip. The guy I bought my boat from left two separate cans of petrified Beer Nuts in my boat. I already bought an anchor, or I'd have used those... |
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Posts: 43
Location: Roseau, MN | Sounds like you have it figured out, but the wiring you described is not uncommon. The conversion to 24V is completed in the plug itself. If you take it apart you should find a metal jumper and depending on how you wire your trolling motor to it, it will be 12 or 24v.
With that being said, I am changing out my plug and receptacle because I've had two plugs that have melted around the jumper and shorted the circuit. After reading several other reviews of the plug at Bass Pro it happens often. |
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Posts: 32959
Location: Rhinelander, Wisconsin | If that's a Marinco, usually the problem if you are shorting out the burn bar in the plug is not having the all connections inside the plug absolutely snugged down tight. I had that issue on a couple, and since haven't had any problems at all. |
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| Ditto on what Steve said. Had the same thing happen on my buddy's boat. It only showed up after fishing in 2 foot rollers. The strap was not tight in the plug. |
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Posts: 477
Location: Iowa | I will take mine apart and double check, but I tested with my volt meter,every way possible on outlet side of plug and only 12. Maybe the jumper is missing on mine. |
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Posts: 477
Location: Iowa | Now I am the fool. When I took it apart last night, there was corrosion. So I cleaned it up. In doing so, the jumper was rotted and I must have gotten rid of what little connection was still there. I had a spare with the boat. All is right again and I don't have to buy a cable today. |
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Posts: 279
| sworrall - 9/15/2012 8:50 AM
If that's a Marinco, usually the problem if you are shorting out the burn bar in the plug is not having the all connections inside the plug absolutely snugged down tight. I had that issue on a couple, and since haven't had any problems at all.
Yeah I have blown two of them on mine now. Can I take that burn bar out and put a wire in its place? Since Ive got the resetable circut breakers also? |
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Posts: 32959
Location: Rhinelander, Wisconsin | I wouldn't, no. Just make sure ALL the connections are tight, even the screws with no wires running to them, and that should solve your problems. |
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Posts: 548
Location: MN | 200C - 9/15/2012 8:08 AM
Good tip. The guy I bought my boat from left two separate cans of petrified Beer Nuts in my boat. I already bought an anchor, or I'd have used those...
lol |
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Posts: 43
Location: Roseau, MN | Yeah, they both were Mainco plugs. The first one could have been loose, but I doubt the second one was loose because I was careful the 2nd time around. Both times it melted was in 2-footers and the motor on about level 8 so I imagine it just got hot and melted. Don't know that that was the issue for sure but I'm going to a different style so I don't have another day cut short. |
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| For a foolproof fix, get rid of the jumper in the plug and install a jump wire between the batteries. Then simply run two wires to the motor. Much more reliable in my experience. |
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Posts: 60
Location: Colgate, WI | I'm confused. I've never seen a motor wired in the fashion you're describing.
I have a 36V Terrova and have only two wires running to the plug (1 positive and 1 negative). The key to getting the voltage correct is wiring the batteries in series (like a chain - positive to negative and positive to negative with jumper wires in the battery compartment). The wires to the plug will then get attached to the respective positive and negative teminals on either end.
In the attachment is a diagram for a 24V system. Hope it helps.
Blair
Attachments
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 24V diagram.jpg (32KB - 166 downloads)
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Posts: 32959
Location: Rhinelander, Wisconsin | There are only two wires running to a Marinco plug as well. The availability of 24 and 36 volt is accomplished in the panel, there are three leads for the 36 volt system, or two for the 24 for battery installation. |
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Posts: 5874
| Lucky Loon - 9/17/2012 8:48 AM
In the attachment is a diagram for a 24V system. Hope it helps.
Blair
Optional Circuit breaker? Uhm. No. You must have circuit protection. It is not optional. Fuse or circuit breaker, but you gotta have something.
Lots of boats come with pairs of wires for each battery to a distribution strip near the TM receptacle. For 24V, two pairs are just wired to the recpt, and the jumper gets you 24V. On 36V, 3 pairs to the distribution strip, with one jumper on the distribution block, and one in the plug.
Personally, I'd rather jumper at the batteries, and run just 2 heavier ga wires to the recept.
Edited by Shep 9/18/2012 11:25 AM
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