Hi, my project box is a large tin cookie box. I need to bring in +15V,
-15V, and GND lines from my external bipolar power supply. (I was thinking I would have a separate bolt for the chassis ground, which would go off to a big ground bus bar near my workbench.) For the three lines from the power supply, I am wondering what would be the best (but economical) choice for a power connector to mount into the side of the project box. Something that sounded appealing was the spring speaker terminal clips I see on Amazon, but the downside there is they only come in pairs of two or four, rather than three, and they are color coded red/black which does not quite make sense here. I am inclined to leave the wires on the power supply itself bare on the end, rather than attaching some specialty connector to those.