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Old 07-18-2019, 12:00 PM   #1
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rudder indicator

On my 2007 40 ft mainship trawler the rudder indicator works if i start the boat from the upper helm.It does not work if i start it from the lower helm. Anyone have this happen and if so what did you find was the problem? Tom
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Old 07-18-2019, 12:25 PM   #2
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Where is the Rudder Indicator? Upper Helm? Follow the positive lead from the rudder indicator. I suspect it is wired into the ignition switch at the upper.

If so, set the ignition to RUN at the upper station after starting the engine on the lower and see if the rudder indicator starts working.
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Old 07-18-2019, 01:46 PM   #3
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If you have not done so already. Check the connection on the indicator it could be loose or have corrosion.
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Old 07-18-2019, 02:40 PM   #4
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rudder sender

Does anyone know how to get a new rudder indicator for a 40 ft mainship 2007 trawler its light blue and attaches to the rudder with a adjustable arm.I tried loading picture but iu can't get it to load.
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Old 07-18-2019, 04:45 PM   #5
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I'm sure it doesn't have to be that one.

EBay have plenty of similar ones that I am sure will do the same job but, how do you know its the rudder indicator at fault?
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Old 07-18-2019, 06:52 PM   #6
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rudder indicator

The electrician said it's the problem
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Old 07-18-2019, 09:07 PM   #7
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Originally Posted by tomsboat View Post
The electrician said it's the problem
Seems odd that it works from one helm station but not the other.

Perhaps the electrician is the problem?
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Old 07-18-2019, 09:08 PM   #8
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Maybe try a new electrician.

It turns on and indicates from one switch,
I don't think the problem is in the sensor,
it only has two wires.

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Old 07-18-2019, 09:09 PM   #9
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Simi types faster than I do

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Old 07-18-2019, 10:39 PM   #10
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It might be available in UK. Several companies stock it but might not ship to US.

Reliance Marine - Rudder Indicator Sender - Dual Station

Any 12V, 0-180 ohm, dual station sender will work.
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Old 07-20-2019, 07:32 PM   #11
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rudder sender

I think the electrician broke it by tighten the nut on the post to tight.I think once I get a new sender I will be right where I started.It's so hard to find good mechanics in this business they tend to replace parts until they find the one that works.I'm going thru the same thing with my AC unit.If you have good mechanics where you are appreciate them
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Old 07-21-2019, 12:27 PM   #12
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Quote:
Originally Posted by tomsboat View Post
I think the electrician broke it by tighten the nut on the post to tight.I think once I get a new sender I will be right where I started.It's so hard to find good mechanics in this business they tend to replace parts until they find the one that works.I'm going thru the same thing with my AC unit.If you have good mechanics where you are appreciate them
Is your problem with gauges showing rudder position or with the sender unit itself ? Or did it start as a single gauge problem and then while trying to help, your electrician broke the sender? Do you have an autopilot ? If so the sender may need matching with that. Someone might comment on how interchangeable rudder position senders are with different pilots.
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Old 07-22-2019, 07:50 AM   #13
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From what I can see in picture is that you have just 2 wires from the sender going to the gauges in parallel set up. Thus one gauge works (which means sender IS WORKING). I would check the wires going to the gauge not working, and especially the connections at the rear of the not working gauge.

Mine did not work due to 19 years of corrosion, so I replaced the entire set up. I installed a sender with connections for both the fly bridge and inside helm gauges. I posted my installation of new here on the TF.
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Old 07-22-2019, 07:54 AM   #14
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Rudder indicator install

390 Trawler 2000 rudder indicator install
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Old 08-14-2019, 10:00 AM   #15
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Rudder sender

I see a reply that said any sender of 12 volt 0 to 180 ohms will work .I can't get anything thru England I just want to make sure 12 volt 0 to 180 ohms will work can anyone confirm this for a 40 ft 2007 Mainship trawler. Thanks Tom
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