That'd be the fuse box under the hood on a pre-89, correct? It should be a black fusible link. I replaced mine with a 100 amp standard enclosed fuse. It bolts in place, so you have to pull that part of the fuse box apart(easy to do, just don't remember how), unbolt the fusible link, and bolt the fuse it. You can get a 100 amp. fuse, with straight legs and predrilled holes, at most parts stores.