Raymarine forum

Hi,
My steel riverboat came with a transducer but no reader unit . I have purchased an i40 depth unit and the existing throughhull transducer references P7 in its ID ( The full ID 31-374-1-01 does not return an exact match on the database ) so it should be compatible ? The problem is the connectors which are only a 2 pin as opposed to the receiver unit 3 spade type connectors. Would anyone know if I can still wire up the old transducer to suit the new reader unit ? ( and what is the likely hood of it working ?
Photos of existing transducer included.
Thanks - Martyn

Hello Martyn,

If your transducer doesn't have an OEM/manufacturer part number on it, and you don't know what it was previously connected to, and Airmar's cross-reference doesn't list it (and, from the label, it was apparently built around 18 years ago) then I'm sorry to say that we can't be sure what's inside that transducer and what it's compatible with and it would be best to replace it rather than risk damaging your new display by connecting an incompatible transducer.

See, for example, the following FAQ on Airmar's website: Are all Airmar transducers built the same except with different connectors for Furuno, Garmin, Lowrance, Raymarine, Simrad and others?

Regards,
Tom