lol don’t do that unless you want to fuck up your fuse block at best, burn your car to the ground at worst.
Why does it have to be 10 amps or less? Is that just the size of the fuse in the add-a-circuit? Can you swap a bigger fuse into the add-a-circuit?
Oh, and fuse *blOck
And if you do just splice in somewhere, use a quick-splice: