PJ Knight
Hi Guys I'm in the process of building 7mm mixed gauge layout (Standard & Narrow) and I have obtained a mixed gauge diamond crossing built by Marcway for my late father.

Is it possible to wire the crossing as a stand alone item or do the crossing frogs need to have the polarity changed by a point motor?
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AHJAY
Generally the easiest approach is to wire a diamond so that it takes its frog polarities from the switching of the point motors that lead to it.

If you get stuck then a clear top down photo + a sketch of the trackwork related to the diamond would let us give you an appropriate bit of help in the form of a diagram

regards, Ahjay
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