Adventure2020
Member Since: 13 Jan 2020
Location: Hook
Posts: 9
  
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| D3 to D4 Conversion Fast Flash Indicators |
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This topic must have been done to death but can't find a direct answer....Early D4 headlights fitted to a D3 tend to fast flash on the dash.
OEM Phillips halogen bulbs fitted, do I need to install 15 Ohm resistor like is necessary when installing D4 rear lights?
The fog/pdc loom splice is straight forward and info readily available, but from the facelift threads I've read, the fast flash ssue isn't answered directly.
Any direct link, or confirmation of the above is much appreciated.
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 18th Feb 2021 5:00 pm |
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loanrangie
Member Since: 18 Jun 2017
Location: Melbourne
Posts: 600
 
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If the indicators are LED then yes you need resistors.
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| 19th Feb 2021 12:04 am |
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Adventure2020
Member Since: 13 Jan 2020
Location: Hook
Posts: 9
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OEM LR014111 bulbs fitted. I thought fast flash was perhaps a quirk of D4 headlights fitted to D3?
Perhaps not then? Maybe it's just a duff bulb.
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| 19th Feb 2021 11:26 am |
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Martin
Site Admin and Owner
Member Since: 06 Nov 2004
Location: Hook Norton
Posts: 18454
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Are the bulbs actually flashing OK outside?
The dash fast flash is a warning that a bulb has failed, it uses current sensing to work this out.
The lower current drawn when a bulb blows triggers the warning.
The D4 rear lamp conversion (or swapping to LED "bulbs") triggers this as the current draw is much smaller than with a bulb. The resistors draw current, which stops the blown bulb warning triggering.
Are you using D3 or D4 rear lamps? 06 D3 SE / 15 LR D90 XS SW / 88 LR 90 Td5 / 68 BMW 2000 ti
Any issues with the site let me know!
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| 19th Feb 2021 12:06 pm |
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