Question about Humminbird 7100021 Transducer, Shs 7w

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Transducer cable is partialy cut at base of transducer

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Hi! Engine thiefs cutted off the cable of transducer of Navman 4430. Any idea where to get a new transducer with cable as a spare part?? Pxi

Pekka, Transducer and cable at links below.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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Apr 20, 2016 | Navman GPS

1 Answer

Gps problem

If the new harness / parts are listed for use with this model GPS, it should work - unless you have miswired something. Double-check your work. Make sure all connections are made up tight. Pay particular attention to the ground wire. Relying on the boat to pass ground it not reliable. Look for damaged or cut cable from power source and transducer. You may wish to troubleshoot with a meter or a test light to be sure power is available at the GPS. Good luck!

May 29, 2013 | Humminbird 1198C SI Side Imaging High...

2 Answers

Can a cable on a depth finder be spliced

it can but will not work like a new one . . .they don't cost that much why splice it back

Feb 16, 2013 | Boating

1 Answer

The transducer cable was cut. can I splice the cable and still get a quality reading? Any trick to this?

You sure can splice the cable and the readings would not be effected as long as you perform a solder splice with heat shrink. Just be careful to keep all the individual wires separate when splicing.

Jun 25, 2010 | Lowrance PdWbl Transducer

1 Answer

Whta fluid do I put in a QT-206 transducer base when mounting it inside a fibergalss hull ? I had heard baby oil ...

You can use mineral oil, baby oil, I recommend the environmental friendly (pink) antifreeze.

May 18, 2010 | Boating

2 Answers


REmove speedo cable & inspect inner cable for frayed wire. If not frayed lube cable with graphite grease preferably or oil. replace cable. this should solve problem. If not replace cable.

Sep 15, 2009 | 1980 Chevrolet Corvette

1 Answer

How to splice cables for my fish finder

Man, As much as I hate to say it, you need to call up Lawrance and order a new one. I have tried but have never been able to repair cut transducer cables.

Jun 27, 2009 | Boating

2 Answers

Lowrance x135 not functioning properly

Had the same issue with another brand. Turned out the transducer cable was picking up noise from other cables (power, trolling mtr. etc). Try moving the transducer cable away from any other cables. I put the cable in a 1/4 " plastic housing up to the point where it was above deck and it stopped all the strange stuff. Not sure about the temp issue??

Mar 29, 2009 | Lowrance X135 Power Pro Sonar Without...

1 Answer

False fish readings

False fish readings are commonly caused by electrical interference such as alternator noise, and by air bubbles flowing across transducer.

For starters make sure your fishfinder is on an independent circuit and not on one powered by your ignition switch. In other words, you should be able to turn your fishfinder on, even though the engine is turned off. Ideally the fishfinder should be wired directly to the battery with an in line fuse.

Try running the boat at a speed slightly higher than trolling speed, then kill the engine, as the boat slows down to trolling speed do you still see false echos? If yes then the problem probably lies with how the transducer is mounted, or where it is located on the hull.

If you don't see the false echos when the engine is off, it may be necessary to reroute the transducer cable to keep it away from the boat's ignition wires. You can get transducer extension cables if necessary. Also there are filters that you can buy that suppress alternator noise buy attaching between the battery and the engine.

Another common cause of false echos from electrical interference is a transducer cable that has been cut and spliced.

I hope this information helps. Please reply if you have any questions about my response.

Feb 25, 2008 | GPS

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