Hello,i'm tidying up the wires in the rear bench zone and there are these speaker's wires that i won't use,i've removed the plastic thing and i'm left with this:

My doubt is,is it safe to join them together using an electrical insulation tape (so they are in contact with each other) or this may cause a short circuit (if this happens the fuse would just break up but would like this not to happen firstly)?
Thanks.

My doubt is,is it safe to join them together using an electrical insulation tape (so they are in contact with each other) or this may cause a short circuit (if this happens the fuse would just break up but would like this not to happen firstly)?
Thanks.
