I have a tattle tale livorsi speedo and it isn't reading. It also isnt reading on smartcraft. anyone know what the fix is. both have power,incl guage because when you turn key on it moves and also moves when you hit tattle tale button.

Bad antenna, may be one with a battery in it and the battery needs replacing. Is it a livorsi antenna?

yes has livorsi antenna on dash

Livorsi is offering a trade in program for the older antennas.

http://www.livorsi.com/catalog/gps_antenna.htm

I'm having simila problem as well when I took my boat out for the first time today. Livorsi GPS speedo has power to it, but not registering speed. Needle move 1 to 4 mph off of zero then goes back to zero. I suspect based on what I am reading it could be the battery to the livorsi antenna. Does anyone know what kind of battery is used in the GPS speedo?

Not sure what kind it takes but is probably not user servicable. Also don't do what I did and go buy some other gps antenna...it turns out the livorsi gauges may be very sensitive to the antenna. I bought a data tach prop slip gauge and an aftermarket garmin antenna and the gauge won't hold a gps lock. I called livorsi and they said the antenna I bought may be sending to much information to the gauge and confusing it.

They said their antenna's send just speed and heading.

It's all in this thread

u know that threads over 4 years old, right

I have a Data Tach too with an aftermarket antenna and I have the same problem you described above, did it get fixed with the Livorsi antenna?

Thanks

Yes, I was just wondering if he was able to get the gauge to work with a different receiver, why?