I bought some ebay Spyders about seven years ago, and they were a massive upgrade to stock halogens. I never wired the halos, but with a relay and a fuse it's not difficult. I crammed some DDM warranted ballasts and bulbs in there at 4300k, and it was a huge improvement. I did a ton of night driving at that point, so it was easy to tell, once I got the aiming right.

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2001 E53 3.0 5pd