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

Common changes involve a new connector that fits the unit and splicing in the old cable. If the old cable is 10+ years old, I would replace it.

Pekka, Transducer and cable at links below.
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Hi James!
According to the owner's manual, the 451 can be used as a fishfinder when connected to a transducer. I would contact Garmin directly to see if the ducer from your 160c is compatible with a 451. If it is, you're in business! You'll likely have to cut/splice cable, but it'd be far easier than replacing the thru-hulls. (The 451 does come with transducers.)

It has been my experience that Garmin is REAL good when it comes to answering questions from consumers.
Good luck!

http://www.garmin.com/us/support/

don't splice them bad bad bad call hummingbird order you a set of power cables

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

Any splicing to a cable will degrade the signal quality and will compromise the integrity of the cable itself.

As a repair maybe for a short-term fix, but I wouldn't recommend cutting up a good system.

Certainly you can.

We did that last year with our Raymarine Tridata.

Easy peasy.

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.

cut the wire and re connect with crimp connectors and then seal withe heat shring tubing and a heat gun (put the tubing in first) or you could solder the ends together and heat shrink tubing over the individual wires. So long as you have a good water tight connection ther should be no adverse affects to your equipment.

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.