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First of all, as already said get a wiring diagram ,,
Do not fit a battery either way round. Run leads from a battery via a little bulb (bulb in series with the lead) to one connection, and a straight wire to teh other, whichever way round you want it to run. switch everything off, the bulb should not light.
With this setup you are less likely to damage anything as you test throught the circuits.
Check you have a zener that works, check the rectifyer works.. etc. one thing at a time. Do not be afraid to disconnect stuff to isolate the different circuits. ( normally i would advise marking the disconnected wires....)
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A wise man learns from his mistakes..
A genius learns from other peoples mistakes.
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