2005 SV211 many gauges don't work

[Texas88]

The dash gauges are not working properly as in most don't work at all. Volt gauge works but oil works sometimes and others is pegged all the way high. The others don't work at all. Where is a good place to start looking into this.

Thanks

[askier1]

the gateway box

[dfoster]

Texas 88: I have been told the guages are wired in series, so one thing to check is that whether it is a specific string of guages that all go bad in order. That may not be the case if you say the others are pegged high, but one bad guage can break the connection to the others.

Are there any guides or instructions on how to test things out at the gateway box? I also have an SV with a fuel guage that seems to work every 3 times the boat starts. The digital calculation of Hours remaining seems to keep working and when I get real low the Lo Fuel message comes on, but the guage doesn't.

[Texas88]

Thanks guys, I've printed off the diagram for the Gateway box and I will probably start looking into it tonight.

Where is the Gateway box located?

[Texas88]

I found what says Serial Bus and took a picture of it, I think, but where is the Gateway Box?