Wire coming off of ECU fuse? {93 Accord LX}

I have 1993 Honda Accord LX. It was...very used when I bought it lol. So I've had to make quite a few corrections to things that the original owner "fixed" :jerking:.

Anyway, while correcting fuse ratings , I noticed there is a fuse labeled "Eat ECU, ECU" in the interior fuse box under the steering wheel.

First, what is ECU?

Second, why might there be wire coming from one of the fuse contacts and randomly run back to the stereo console area (perhaps through the firewall)?

I'm curious whether this is normal or if this was a jerry-rig solution to something.


http://i.imgur.com/a1r9ywa.jpg