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power supply - 3 wires on a (bipolar) DC plug - what are they for? - Electrical Engineering Stack Exchange
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Power Supply [SMPS] Basic Wire Color Coding & Testing +3.3V, +5V, +12V and - 12V by Technical Adan. - YouTube
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20/2 Gauge Hookup Electrical Wire 2pin 66FT Red Black Cable Extension Cord 12V/24V DC Cable, 20AWG 2 Conductor Flexible Low-Voltage Tinned-Copper Wire for LED Ribbon Lamp Car Audio Automotive Trailer: Amazon.com: Tools
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