What is an r780???
I'm afraid Zero One is an obsolete system. You may find some help on
uk.rec.models.rail, since the UK is the only country in which Zero One
had any kind of following.
Just for interest, I searched on "zero one model railway control system
wiring" and found this:
You will notice that the discussions about Zero One are all dated 2010
Have a good day and good luck,
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