2004 SV211 horn, tach and temp guage not working

[trabecula]

Just purchased the boat and put it in the water. Unfortunately, these three devices did not work. Is the water guage somehow associated with the tach or are they two different power sources? I assume there is a sending unit for the temp guage on the engine. Does anyone have a picture of the location of this unit?

For the tach, is it a simple wire connection or does it go through the master electrical box?

Finally, where is the horn.

Thanks for your help.

Don

[s_kelley2000]

I am not sure about the horn but all of the gauges are usually daisy chained together behind the dash so I would start there. check for loose or corroded connections behind the dash. I'd also check the wiring at the horn switch.

I think the horn is located under the passenger side windshield. There should be a metal grill that allows sound to emit through it and the horn will be on the back side of that. you should be able to access it from the storage area under the passenger seat.

[ski4evr]

Shawn is right. If you have a key, the power starts there and daisy chains to all the gauges. The ground also is run that way. Have had problems with both. If you have a keypad, not so sure. Horn is definitely in passenger compartment next to glove box.