just bought a 79 fairlady z. headlights dont work, i hear the relay kick with the running lights, but no relay kick for headlights, swapped smaller relays, nothing... i have power on both sides of the fusible link marked H.L.

no fuse in the kick panel for it though

You could have dirty contacts in the multi function switch. Sometimes this is not as easily found as one might think because when you use a tester you usually push hard enough to get a good contact but just normal pressure from the switch contacts isn't enough. I don't have a manual for a 79 so I can't tell you where the relay or wires might be.