![Inner Negative] SoulBay 3V 4.5V 5V 6V 7.5V 9V 12V Multi Voltage AC/DC Adapter Switching Replacement Power Supply with 8 Plugs for Tip Negative Effects Pedals Keyboards - 2A Max 2A Center - Inner Negative] SoulBay 3V 4.5V 5V 6V 7.5V 9V 12V Multi Voltage AC/DC Adapter Switching Replacement Power Supply with 8 Plugs for Tip Negative Effects Pedals Keyboards - 2A Max 2A Center -](https://i5.walmartimages.com/asr/18f50ebe-ed1d-4892-acd9-3aa3f5dd51a0.405c884d0d4a8cdf659e58f2625b5f5a.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)
Inner Negative] SoulBay 3V 4.5V 5V 6V 7.5V 9V 12V Multi Voltage AC/DC Adapter Switching Replacement Power Supply with 8 Plugs for Tip Negative Effects Pedals Keyboards - 2A Max 2A Center -
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Can I tell by wire markings on AD/DC power supply which wire is positive and which is negative? : r/AskElectronics
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