I’m new to this Subaru forum. But touching on this older post. I have an 84 1800 gl, and it’s not charging. Put new alternator in, new battery, all new battery cables and grounds, new fusible links. Test the fuse on the fuse block and I have battery voltage on power side of block with fuse in, test the other side of block and there is nothing. But when I remove the L plug I get voltage on the other side of the fuse. This is a real humdinger to me