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Headlight conversion to HID on the Roadster

Discussion in 'Roadster: Technical' started by Tovar, Feb 22, 2016.

  1. Tovar

    Tovar Member

    Feb 22, 2016
    Phoenix, AZ
    I've heard some owners are upgrading their Roadster headlights to HID by baking them in an oven to loosen the seal, and
    then cracking the sealed enclosure open to replace the incandescent bulbs. Does anyone have any details or a procedure,
    and recommendations for HID bulbs?

  2. strider

    strider Active Member

    Oct 20, 2010
    NE Oklahoma
  3. dhrivnak

    dhrivnak Active Member

    Jan 8, 2011
    NE Tennessee
    I purchased some 35w xeon ones from DDM and two years later they are still working great. They are noticeably brighter than stock and at $35 were very reasonable. I did not need to crack the cover and took me about 3 hours from start to finish
  4. thefortunes

    thefortunes Member

    Jun 14, 2013
    I also went the DDM route. Have had (2) ballasts go bad, both within 6 months. I believe the new ballasts are better as the replacements (under warranty) have worked fine.
  5. wiztecy

    wiztecy Active Member

    Apr 29, 2012
    Santa Cruz, California, United States
    #5 wiztecy, Feb 22, 2016
    Last edited: Feb 22, 2016
    TRS (The Retrofit Source) created a full HID conversion kit at my request. That's where you'd need to split your headlights to replace the low beam projector / glass. I've compared the DDM and Tesla HIDs to the TRS I have. The TRS output, coverage, and brightness is identical to the Telsa HID. That's why I wanted to have the projector replaced. I looked at the Tesla halogen projector vs. the Tesla HID projector and they have different focuses. A higher intensity of light and output so needs to have the focus changed or else its not perfect. The DDM scatters the light rather than focusing it evenly. You'll see some streaks and its not as bright since its not focused evenly on the road. There are no streaks or scattered light with the TRS. I had other Roadster owners say the DDM doesn't scatter light, but then when I compared my lights to theirs they could see the difference.

    The DDM is better than the stock halogen, but I don't approve of the company. But if you want to spend around $300-$370 for a set of real HIDs, projectors and ballasts and not afraid to do the work yourself or contract the work out to someone professional then go for the TRS. If price is not an issue, go for the pricey Tesla HIDs.

    Also DDM uses shady tactics. They've posted in forums as a customer, saying the competitor is junk and that the DDM product they just installed is incredible and they highly recommend. Then a person looked further into the user and found out it was DDM, not a real customer who wrote the review! This is pure unethical and untrue advertising techniques. Any company who chooses that route to gain business I really don't want to support nor do I want their product.

    One link of people discussing DDM's shady business tactics:
    DDM Tuning Shady Business Practices? - SaabCentral Forums
  6. Aspirant

    Aspirant Member

    Jul 1, 2010
    I've still got the notoriously dim stock headlights. The high-beams are fine. Has anyone tried simply lowering the aim of the high-beams so they don't point as high and can just be left on during night driving?

    MLAUTO Member

    Mar 8, 2014
    SW Florida
    With all four bulbs lit people will know you have your brights on. Also the high beams don't focus like the low beams, so it will be too bright for oncoming cars.

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