[1980 TA]

I just picked up a 1971 Lemans sport and am trying to get it ready for inspection. The headlights work fine on low. When I flip to high, the left side has neither bulb illuminated and both on the right. The previous owner said he replaced the bulbs a short time ago and they don't look burnt.

What is throwing me is that the left side low went out as I would have assumed it would have stayed on.

I'm not familiar with the lighting circuit at all and would appreciate any pointers on trouble shooting. Once I get this fixed, it should pass inspection.