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Message 3 of 3
Posted by member JBro on Monday 11 August 2025

Hi Peter,
The oil pressure and temperature gauges appear to read correctly. Looking at the wiring diagrams it seems to affect one part of the loom (associated with one plug/socket). I’m going to check the earths this week and also take a look behind the lower panel in the heads.
Thanks for your response and advice and I will report any progress.
Regards
Julian

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Message 2 of 3
Posted by member Peter Cox on Sunday 10 August 2025

Julian
As it affects more than one system, it could be an earth/negative bad connection somewhere. Some warning lights don't come on with the 'ignition' by design, only when the warning condition is reached, eg high temperature, but the oil pressure buzzer should sound. What does the oil pressure gauge read when the buzzer fails to sound?

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Message 1 of 3
Posted by member JBro on Thursday 7 August 2025

Hi all,
I have a new to me Hardy Mariner 26 and the oil pressure buzzer and some warning lights are inop. I’ve checked behind the instrument panel and they have power reaching them. As it’s more than one warning light I suspect it might be a plug/socket issue somewhere and I wondered if anyone else has experienced this and could give some advice.
Many thanks
Julian

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