Interestingly. The US contingent got back to me. They suggested the part was a heat sensor and sent a photo. The photo they sent was similar to what I have, but suffered in that it had an additional wire connection that then fed back to a relay. The part they showed me we do not have. 

I like safety features, however this scenario like engines, I’d rather ruin an engine saving the ship than ruin the ship saving an engine. 

I use the thruster when I can’t maneuver with the rudder and as sparingly as possible. 

There evidently is a sidepower outfit here in Tahiti. I’m going to ask them to have a look, if covid doesn’t stop us!  

Thanks again

Porter

A54-152