No Temp signal at either helm

[hardshell46]

Hi all, after a very long time I finally settled on an 1987 54 motor yacht. Looking to get her down to New Bern soon. There is an issue with my temperature gauges, no reading on either gauge at either helm. Checked grounds and connections, all good. A friend tells me I need senders, and I’m thinking of the coincidence that both are bad at the same time. The boat has only 12 hrs in the last two years, looking for some advice, thanks

[bigbill]

swat them from the other motor. see if that fixes it

[jim rosenthal]

Are they fed by a common power source, like a DC-DC converter, maybe?

[hardshell46]

Hi Jim, I’m not sure, this boat is a far sight more complex than Hard Shell. She’s in the Narrows j24The Ethel Marion

[SeaEric]

IIRC There was some recent discussion on here about the gauges on a 32v boat being run by a 32 to 12v converter. That's probably a good place to start.

[hardshell46]

Thank you Eric, I’ll look there, that’s if I can find it, oh the joy a new boat😎

[MadHatter53]

Having just the two gauges go out together sounds more like the sensor or it’s wiring. If the converter was bad I think the other gauges might not work either. You don’t say if one side works or if both sides are out.

[hardshell46]

Both temp gauges on both helms are out, going to replace the senders today and will let you all knowhow thing work, thank you

[jim rosenthal]

They ARE more complex, and a 46C isn't exactly a stand-up paddleboard, itself, is it.

If all the temp gauges on both sides of the boat are out, that sounds like a current supply issue to the gauges, and I would look for a 12v-32v converter which has gone on vacation...

[rwaldrop13]

I'll be interested to hear what you find on this also. PO converted my boat (1986 54') to 24V but comparing engine room, lower and upper helm gages, all are in agreement. I have a bad sender on starboard engine tachometer, but it does not affect synchronizers, just means I don't have RPM's on that display. However, I can adjust throttles to match RPM's by tone (thank you Detroits). Please post what you find out!