1970 Dart Headlight Switch

If your dash lights are not working, the first thing I would check before buying anything is making sure the the light switch knob is actually on. Rotate the knob back and forth and see if you have lights. Sometimes the reostat on the light switch gets some corrosion on it. If that does nothing then check the fuse. It should be a 5A fuse, usually at the end of the fuse panel. IIRC a Brown wire from the light switch is on one fuse terminal and provides power to the fuse; the other is an orange wire or possibly more piggybacked on the other fuse terminal going to the instrument lighting or any other light when the light switch is pulled to the first or 2nd position (radio light, ashtray light for example). If nothing then change the light switch. The 2nd one you linked looks exactly light the one I'm using in my modified Mirada dash harness. I have 3 or 4 original switches - I can send you one for the cost of postage if you want.