Mike, you are correct ...15 amps is heaviest fuse. '79 620 is what I have.
My cover is missing a chunk from right top corner so I would like an image of a unbroken one. That would show me what that fuse and the one right below it goes to.
Heck, my block itself is broken clean through the middle, top to bottom.
Have any sources for a simple block like this??
Kim