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  "Wiring in" an Eagle Depth Finder

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Author Topic:   "Wiring in" an Eagle Depth Finder
BradT posted 06-18-2007 03:00 PM ET (US)   Profile for BradT   Send Email to BradT  
I bought a new Eagle depth finder and had the mechanic at my local marina install it in my Sunray 19 foot bowrider. He told me he wired it up so that it would work both with the motor running and while the motor was turned off.
It works fine with the motor off but as soon as I turn on the ignition, the display shuts off and I cannot get it to turn back on while the boat is running. If I turn the boat off, the depth finder can be turned on again and works fine.
I am not electrically inclined but I took a look at the wiring and noticed that one wire is connected to the ignition and the other to the battery. I am unable to get back to the mechanic for a while.
Any suggestions on things I might check/try to get it working?
davej14 posted 06-18-2007 04:00 PM ET (US)     Profile for davej14  Send Email to davej14     
If you have an on/off switch on the fishfinder, you can run it directly from the battery IF there is an in-line fuse in the power lead (an in-line fuse is normally supplied on the positive red power lead) unless it was removed by your installer. Do not wire directly to the battery without a fuse. You may want to check you battery voltage when the motor is running. Low voltage could cause the fishfinder to shut down.

I don't know what this has to do with Boston Whalers, but what the heck.

where2 posted 06-18-2007 10:49 PM ET (US)     Profile for where2  Send Email to where2     
His mechanic is not an electrical genius. He wired the negative lead to something that is +12v when the boat ignition is on. Hence, it doesn't work when the boat is running, but works fine when the boat is off...

Most of your 12v circuits will pass enough current to ground to allow you to run something like this depth finder. Move the negative lead to a real ground lead and it should work as originally advertised.

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