Need tips for wiring a 12v USB plug

[Tnedator]

I need to wire a 12v USB plug into my half bath wiring closet. I have a 12v fuse box (see pic).

Can I take an open slot, like f20, put the hot wire on the blade and then is the silver section on the top right for hooking up ground wires?

I don't have any proper connections to put on the blade with me, so could I get away with twisting wire around blade and wrapping with electrical tape?

Edit: Actually, found a couple ends that fit on the blades. Not sure I have a proper crimp tool, but figure can make due with pliers or the like.

Just need to confirm that upper right silver piece is for the ground wire.

 

[Neal]

Yes, that is correct, open spade for your RED and add fuse after you connect the ground (white) to the upper right section. Super simple.

https://www.amazon.com/dp/B08BZ972B5/?tag=rvf01-20

https://www.amazon.com/dp/B07S4HDGK9/?tag=rvf01-20

 

[Tnedator]

Yes, that is correct, open spade for your RED and add fuse after you connect the ground (white) to the upper right section. Super simple.

https://www.amazon.com/dp/B08BZ972B5/?tag=rvf01-20

https://www.amazon.com/dp/B07S4HDGK9/?tag=rvf01-20

Thanks! That's what I thought, but wanted to be sure.

Pretty sure I have a box of connectors and crimp tool in my garage or RV garage -- but will check my bays when it stops raining in case they are in the RV. I didn't notice at first, but the USB setup was prewired with hardware to mount over a post, but they did include to spade connectors in the box as well. So, if I don't find my stuff here, while on this trip, I'll use a pair of needle nose to crimp, and then replace properly when I'm home. It also has an inline fuse, which I want to remove and replace with straight wire.

Since it has an inline 10amp, should

 

[GTS225]

No.....a USB shouldn't need any more than 5 amps.

Roger