I'm trying to get my '73 Road Runner rust-bucket back on the road. It's been down since around 1994. I fixed the oil pan, brake lines, floor pans, and was ready for a Friday night test run...almost. Now there's no headlights! Two trips to the auto parts store later and I have a new dimmer switch and new headlight switch, but still no headlights. I now have marker lights, but no headlights(yes, I did pull the knob out all the way! ). Am I missing something here? Inline fuse or something that would affect headlights but not affect marker lights, or is the only possibility a faulty plug at the headlight switch or at the dimmer switch?