My headlights stopped working, the switch is still getting power and the fuse is good. However the headlamps themselves aren’t coming on, When I test the plug-in at the headlamps with a multimeter, I’m not showing any positive power. However, when I have the red prong of the multimeter on the positive of the battery and using the black prong at the harness, I’ll show voltage at each of the 3 wires.
Any ideas why all 3 wires would be grounding? Besides the fuse in the panel is there another fuse or relay of some kind?

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