No side or dash lights.

[old-and-rusty]

Hiya,
If all your fuses are okay, then it does sound like a fusible link. I think there should be four of them. One for the headlight motor, one for the ignition relay, one for the lights that are not working and not sure about the fourth one . I had a similar problem with my car, the connection on the fusible link had got corroded.
Hope some of this helps.
Regards,
Ian.