Given the task definition and input, reply with output. In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.

I purchase this item and hope so using it for my high beams. I purchase 2 bulbs about 4 months ago for my low beam and they work perfect so I figured I would order the high beam. I installed the high beams yesterday but they do not work. Can anyone let me know why?
I purchase 2 bulbs about 4 months ago for my low beam and they work perfect so I figured I would order the high beam