OK, here's the scoop: 1969 El Camino ss396. I was testing the horns, and posted a question on testing the horn relay. Got the horns working, but now no headlights. Nothing at all, dash, parking, or headlights. One thing that was suggested in my horn troubleshooting was to remove the red wire on the relay and touch the post with the black wire. Could this have caused the fusible link to blow? There is a fusible link that is near the relay, how can I test it? One other point, the interior light does work, but I haven't tried to turn the headlight switch to power it on, as I just thought of that while writing this. Thank you in advance, as you always steer me straight.