Hi Keith,
I measured my power supply:
You have to look on to the plug, the black plastic pin must be down.
I think the left both pins are ground and both right pins are +12V.
Ralph
Ing. Ralph Alexander, EGSTON Ges.m.b.H.
Grafenbergerstrasse 37,A-3730 Eggenburg, Austria
Tel.: ++43(2984)2226-279, Fax: -204
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