95 Integra lost radio memory and clock

Not sure if anyone will be able to help, but I'm looking for some ideas.  I have a '95 Acura Integra GSR.  While "fixing" a loose installation of a head unit, I seem to have somehow lost power to my memory wire.  I theoretically didn't do anything but remove the head unit and reinstall it, no switching of wires or anything.  However, now the wire for "memory" no longer has power.  My car's clock draws power from that wire as well, so it's no longer working, either.  I know it's not the head unit, because if I send power to that wire from another wire, such as the main power wire, the radio will work and it will keep its memory (and the car's clock will work) as long as that power remains constant.

I've run back on that wire as far as I can and can't find any breaks.  I've checked every fuse I can find (though none are labeled for these functions) and don't find any that are faulty.  I'm kind of stumped, now.  Anyone have any ideas?

My alternative to fixing this problem would be, I guess, to run power from somewhere else.  Anyone have any good ideas for where I could splice power in to this line from?  I'm not great with car electrical systems.

Thanks in advance for any help!