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H7 LED bulb replacement...

StephenFord
StephenFord
in Ford Focus Club

Featured Replies

  • Author
11 minutes ago, ian1gail said:

Has fitting them brought up a warning light? They sound just what i am after.

A warning light?? LOL My car is 18 years old, it doesn't have them :laugh:

  • Quote
    • Haha 2


    its a proper car not a BMW Merc, fail and complain device

  • Quote
    • Haha 3
    • Confused 1

    I expected you to say that you had a big red flashing warning saying "None CE approved LED's Detected" accompanied by a loud warning chime 🤣

  • Quote
    • Haha 4
    • Author
    1 minute ago, unofix said:

    I expected you to say that you had a big red flashing warning saying "None CE approved LED's Detected" accompanied by a loud warning chime 🤣

    Oh, you were right, the bulbs light up no matter which way they are connected unlike most LEDs I have come across which are polarity sensitive...

  • Quote

    As you say LED's are in fact polarity conscious. The clever trick is that fitted inside the lamp is a small Bridge Rectifier which ensures no matter what the polarity of the supply connected, the anode of the LED will always be positive.

     

  • Quote
    • Like 3
    • 3 months later...
    • Author

    I'm embarrassed to report this, but in the quest for the greater good, here goes.

    In preparation for a forthcoming MOT, I decided to get my headlight alignment professionally checked. Well, the guy showed me the 'machine' which showed the dispersion range wasn't up to scratch. Turns out, with both (!) bulbs, I had managed to insert them the wrong way up!

    Normally, the cut outs on an H7 won't allow that, but for some reason, these bulbs do allow. Anyway, all now sorted, and alignment perfect. Now, all the MOT center can do is fail them because they are LED LOL

    EDIT

    July 2023. Bulbs passed MOT with no issue at all, beam dispersion all within expected parameters...

     

  • Quote
    • Like 1
    • Haha 5

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    • The Digestive Forum Roundup (24th May - 31st May 2026)

      Steve ·
      The Digestive Forum Roundup (24th May - 31st May 2026) We hope this email finds you well and enjoying your week. As always, our forum has been buzzing with activity, so we’ve compiled the highlights for you. Plenty of interesting discussions are taking place, especially around the Ford Focus and Fiesta models. Starting off with the Focus, many members have been discussing issues with the Emergency Call System, particularly in the Mk4 model. PLB raised concerns about persistent malfunctions, a se
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