12V DC Power Connector 5.5mm x 2.1mm, 10Pcs Female Power Jack Adapter for Led Strip CCTV Security Camera Cable Wire Ends Plug

These function perfectly. Insert your hot wire into the terminal with the and tighten the set screw. Insert your ground wire into the terminal with the – and tighten the set screw. All set! Now you will have power with what’s called a center positive configuration on the plug. You can check your power supply to make sure it provides electricity on the center and ground on the sleeve. Power supplies usually have a little diagram that depicts whether they are center positive or center negative. If you want to use this with a center negative power supply such as those used for guitar pedals, you can switch the wiring on this plug. Connect your ground to the terminal and your hot wire to the – terminal to use it with a center negative power supply.The reason I rate these at 4 stars instead of 5 is that I wish they had a screw tip to permanently panel mount them. That would make them more versatile for use in finished applications.I work extensively with prototyping electronics and use these for building out benchtop prototypes. They are not easy to embed inside an enclosure for a finished application, but I do recommend them for prototyping or making DIY power cords. They work well and are easy to use.