Thank you!
For folks in the same boat, my symptoms were that both low beams were working, but when I turned on high beam only the left side was on. The right was completely out. The right headlight connector directly before the bulb showed 12 volts with a multimeter, but when the bulb was connected it was not lighting up. Very very confusing.
Thank you so much for putting this together. This issue was giving me a lot of headache and I was so close to starting to delve into the wiring loom and start tracing back the headlight wires looking for exposed wires.
But I found your thread and this solved my issue.
Thank you so much.