thought so. mine was made in September '03 lol
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or maybe I do? |
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The tail light difference is dependent on the inclusion of Xenon lighting, the build date and intended market. According to the wiring diagrams, all cars up to build date 09/01 didn't have the PWM tails. From 09/01 until 09/02 all USA cars got the "force-dependent brake light function" feature, not using the PWM feature but using an extra lamp. The rest of the world never got this configuration. From 09/02 in the USA and 10/03 in the ROW all cars got PWM tails, including the "force-dependent brake light function". But it also looks like the "force-dependent brake light function" may have been included in the ROW Xenon package when it was selected as an option, so even though the wiring diagrams indicated that no ROW car had PWM tails until 10/03 and all USA cars had it from 09/02, I'm pretty sure there are exceptions. At any rate, there are at least twelve different tail light wiring configurations! :confused: USA Halogen - 09/99 - 09/01 USA Xenon - 09/99 - 09/01 USA Halogen - 09/01 - 09/02 USA Xenon - 09/01 - 09/02 USA Halogen - 09/02 - 10/03 USA Xenon - 09/02 - 10/03 USA Halogen - 10/03 - ??/06 USA Xenon - 10/03 - ??/06 ROW Halogen - 09/99 - 10/03 ROW Xenon - 09/99 - 10/03 ROW Halogen - 10/03 - ??/06 ROW Xenon - 10/03 - ??/06 All bets are off!!! :rolleyes: |
So the brake light has different stages? About to pull in backwards across the street against the storefront to check lol
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http://www.xoutpost.com/bmw-sav-foru...ght-diy-3.html |
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BUT, it doesn't make sense to be able to change the mark/space ratio in coding, or at least too much, as that defeats the functionality. My guess it the value you are adjusting is actually the frequency of the PWM, which will have the same (visual) effect as adding the capacitors. The caps smooth out the pulses so you can't see them - the higher frequency makes the pulses too fast to see. Same same... |
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Haven't reversed through a storefront either..! :D |
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The reason such options would have been provided on the assembly line for easy provision for change, I'm guessing, was to provide an easy way to alter the brightness of the tail and brake lights. Three years now , and no capacitors , No flicker; and no problems with my LED tail lights! :2thumbs::bmw: |
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