gauge not working

I have a 2008 Sea Ray 220 Sundeck and the Speedometer, trim on the center gauge, and digital led screen on the tachometer (not tach) all went out suddenly while boating last weekend. Otherwise boat ran great had no issues. Ive checked all the fuses visually and with a multimeter, none are bad. I...

We have a Smartcraft on our 2008 Sundancer 44 and the gauges were a bit off when we bought the boat in March, but then we had it washed and now the gauges and display are not working, along with the skyhook. Anyone have any advice on what to check or how to reset?

I have a 7.4L EFI Horizon Mercruiser Raw Water Cooled. The temperature gauge has been warming up to about 200-220 deg. 1. The computer indicates is running at 158-163 deg. (mercruiser scan tool) 2. I have changed the sending unite twice. 3. I changed the Thermostat. 4. Changed the Thermostat...

My 2000 SeaRay 240 Sundeck with 5.7 L Merc & Bravo III temperature gauge is not working. I replaced both the sending unit on the engine block and the gauge in the dash. Still nothing. Any ideas? I will check continuity of the connecting wires next but perhaps someone has had this problem...