DC Power Jack Wiring | All About Circuits Feb 06, 2012Looking for some quick assistance (easy one) on how to properly wire a 3-pin DC power jack. I don't need/want the switching pin. The positive pin I am assuming is the center. The switching pin I am assuming is the pin that does not have continuity when I test between it and the jack when inserted? Assuming that, gnd goes to the non-switching pin?USB - DC JACK Connection | All About CircuitsJul 22, 2014help wiring of dc power jack and spst | All About CircuitsSep 02, 2011Coax DC Power Jack | All About CircuitsNov 10, 2010DC power jack in OrCad | All About CircuitsNov 10, 2010See more results Amazon: dc power jack connector Amazon: dc power jack connector. Skip to main content. Male + 10 x Female 12V DC Power Connector 5 x 2 24V Power Jack Socket for Led Strip CCTV Security Camera Cable Wire Ends 10Pcs Plug Barrel Adapter. 4.7 out of 5 stars 58. $9 $ 9. 39. Get it as soon as Thu, Aug 22.