Replaced right head assembly everything new on it, go to plug everything works but the headlight eyebrow lights up single light work , so i switch sides put the left on right & right on the left it works perfectly. Go to put it back on right side the headlight won’t light up still. Switch works fuses are good it just won’t light up headlight. Can someone give me some advice please already spent 400 on assembly much rather fix it myself.

once i turn on my car all the headlights work except one the low/high beam on my driver side i have tried putting a new bulb but nothing need help