I think the fusible links supply the power to make the headlights go up. I had an '84 that had a fuseholder with a 30A in it, replacing the links. Until I put a new fuse in it, I was pulling my hair out trying to get the headlights up. I hadn't tried it sooner because I thought it was something unrelated, the car had a bunch of extra wiring for stereo, radar detector, etc.
What size fuse is appropriate to replace the 0.5 sq mm links? Is 1 OK? Would individual fuses be better?