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2014 Jeep Cherokee - Light flickers

one light on other flicker

Well , that is certainly a vague post.

“One if by land and two if by sea”.

I don’t know what the flickering light should indicate.

Aliens have invaded your Jeep… The truth is out there!

If I’m reading your post correctly you have one headlight flickering. One likely cause is a bad electrical connection. If you can reach the wire where it connects to the bulb wiggle it and see if it clears up the problem.