[KevinH1990]

In addition to the guidance that PLP provided, you cannot rule out the possibility of deteriorated wiring inside the light assembly. You can check out my experience refurbishing a set of litronics in this thread: http://986forum.com/forums/boxster-general-discussions/54697-advice-used-litronics.html

I had a bad ballast on one light and deteriorated wiring in another. I was able to swap the working ballast between the two headlights and confirm that was the problem before I purchased a replacement. You may want to purchase one ballast to confirm that fixes the problem before investing in a second. I believe they are fairly expensive.

How did the seller know the lights were working when he shipped them? Did he remove them from his vehicle?