So following this,
http://www.retroanaconda.com/landrover/2009/10/installing-defender-td5-gauges-into-a-200tdi300tdi/
Is there anything else I need to put on the transducer, or does it just sit in the hole and gets screwed down?
The reason I ask is what’s in there already looks to be screwed down with two nuts and this new one has nothing? Obviously it has a different hole which I presume tightens it down.
I apologise for the poor writing in the picture, it was done on my phone with fat sausage fingers