XK120 petrol gauge LATE

Hi

Anyone know which is the battery terminal on this fuel gauge? someone scribbled B near one of the posts but that is the opposite of what I’m seeing in similar Smiths gauge stamped gauge housings. BTW, I’m getting 152 ohms between T and B, is that good. Don’t know if this gauge works as I’m just now installing a new harness on a car I’ve never seen run.

In the process of making a tester like this one if you want to see it, too bad he used all the same colored wires. Something that I should have learned years ago but was able to avoid when the money was more plentiful.

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The one that is marked B is, in fact T. The other one is B. Let me know if the gauge doesn’t work.

Eric
Shropshire, UK