Headlight parking LEDs aren't working

wdkwang

So I got tired of replacing the cheapo LEDs that I got off ebay for the parking lights. They normally burn out after maybe half a year.
I decided to go with these T10 194 168 921 W5W CREE LED 5W Q3 Chip Car Side Wedge Light Bulb Lamp White | eBay. The first set I received didn't work. I switched the polarity and tried them on both the driver and passenger side. I had them send me another pair free of charge on the basis that I thought they were DOA. Now the second pair came in today and it's the same problem.
I'm starting to feel paranoid that maybe it's not the LED, but actually the headlight harness itself. Any feedback on this?
I would stick the OEM bulbs back in but I can't find them.

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