DIY: Retrofit Automatic Headlights - Page 4 - BMW M5 Forum and M6 Forums
E39 M5 and E52 Z8 Discussion 1998-2003 Advertiser's Forum

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post #31 of 34 Old 26th February 2019, 12:37 AM
sierramike
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Originally Posted by terraphantm View Post
An 03 should have an RLS if it came with a rain sensor at all. If he somehow doesn't have one, then he'll most likely have to add the wiring.

And yes, if you add it, you should have rain sensing wipers afterwards. Might require your GM to be recoded.
Actually mine doesn't have RS nor RLS fitted. German car, the only country where BMW can be delivered with as few options as a Dacia ... Well, this was to say, they order nude cars with custom list of options, that means original buyer could have chosen professionnal navi but not the rain and/or light sensor ...

Anyways, is the wiring complicated to retrofit? Somebody knows which way the wiring should take and where it plugs?
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post #32 of 34 Old 26th February 2019, 06:13 AM
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It's 4 wires.

Pin 1 = Terminal R (Live with ignition position 1) - from the factory it comes off of X1443



Pin 2 = Ground - from the factory it would go to X10012



Pin 3 = K-bus. Goes to X10016



Pin 4 = X332 Pin 20



You could probably come up with simpler wiring if you wanted.

Last edited by terraphantm; 26th February 2019 at 06:15 AM.
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post #33 of 34 Old 26th February 2019, 11:37 AM
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Originally Posted by josiahg52 View Post
Constantly flashing any light source reduces its lifespan - HID or otherwise. With HID, the concern is really with the ignitor. Modern bulbs, ballasts and ignitors are designed for hot restrikes. Only the very old and most aftermarket equipment should actually show this concern.

Further, automatic headlight systems, even those on vehicles with tungsten-halogen bulb sets, have a delay built in and usually an adjustable sensitivity setting to minimize needless cycling.

In short, it's really not an concern.


Do you mean that we can make the light sensor can be more sensitive to light much better and avoid delay


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post #34 of 34 Old 3rd March 2019, 05:03 PM
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