@wobbly thanks for the reply. From what I can find the threads are12 x1.5 but so far no luck finding the sending unit

@wobbly. I would only do it with an electric gauge. I also have a voltmeter but I don't watch it all the time. It's just better to me than the light. ...

@wobbly thanks for the info. I'm aware of the temptation to focus on the gauge but I still would like to be able to keep an eye on the pressure. In ye...