So the bulbs were indeed installed incorrectly, and noticed they were rusted on the inside, so I went ahead and replaced them.
Now, the driver light works perfectly as it should. The passenger light, the brake light is dim, and when the running lights are on and I press the brakes, the lower running light turns off and I don’t have brakes, but only on the passenger side.
I noticed a red neck job of splicing the trailer connector so I went ahead and ordered a new wire harness for the lights and will remove the trailer harness to see if that works.