DB Link BF106 Gold Barrel Female/Female Connectors

okay so what I've got here are these barrel connectors this is for this is a typical component for connecting power providing power to components and I'm going to show you how to solder one up okay so here is the connector there are two places that we're going to solder to this center pin and there I looked it up there is no standard about whether you connect the positive voltage to the center or to the outside this goes to the center pin inside of the barrel connector and then this connects to the to the outside so that then you have one positive one one negative terminal there is no standard I decided to put the positive in the center for all these it doesn't matter which one you pick as long as you're consistent about the way that you do that and you can also see that this has got a little screw piece on here that so that you can you know put that through the side of a housing and th