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BMW Z4 Flicking HIDs

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  • BMW Z4 Flicking HIDs

    I've fitted a plug&play HID kit to my 2004 BMW Z4, but while it works fine with the engine off, with the engine on they flicker like crazy before they turn off and the car detects a failed bulb.

    Video to better describe what I mean - https://youtu.be/PaZ5_CcHKy4

    I'm using Fast Bright ballasts - https://www.aliexpress.com/snapshot/...tId=1877026108 & Sinolyn bulbs (from the same seller) - https://www.aliexpress.com/snapshot/...tId=1877026108

    I've seen that this is a known issue on the E46 and something to do with the cars lighting module & bulb error detection and that the solution is a capacitor or similar - I don't want to go down this route as I don't want to start introducing joins in the cable for corrosion to start. It's a second car and I wanted something easy!

    However, lots of Z4 owners seem to have HIDs fitted and no-one talks about capacitors.

    I have another (unbranded cheap) kit that I'll try tomorrow, but annoyingly doesn't use the same connector and I don't have any H7 bulbs for it so I won't actually be able to use it properly.

    Any ideas?

  • #2
    BMWs are notoriously finnicky with aftermarket lighting. Nothing easy about it. You'll need canbus error cancellers or capacitors, I'm not 100% sure. They're usually plug and play with a proper H7 harness.

    2000 Toyota MR2 Spyder
    2017 Lexus CT200h F Sport

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    • #3
      Originally posted by Haloruler64 View Post
      BMWs are notoriously finnicky with aftermarket lighting. Nothing easy about it. You'll need canbus error cancellers or capacitors, I'm not 100% sure. They're usually plug and play with a proper H7 harness.
      Thanks. I’ve bought a “CANBUS compatible” (I know it’s actually nothing to do with CANBUS...) kit and it appears to work so I’ll fit it properly and see how I get on.

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