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Old 07-14-2019, 10:00 PM
Mike D Mike D is offline
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Join Date: Jan 2006
Location: Tucson, AZ
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Quote:
Originally Posted by BWhitmore View Post
The 3w bulb provides resistance which is needed to allow the alternator to charge. Mercedes automobiles are very sensitive concerning the wattage of bulbs used in the tail and stop lights also. Not using the correct wattage bulb will disable the cruise control.
Not doubting you as the German engineers are not all that adept in regards to how electricity works in fact, they treat it as though it has some "mystical" properties beyond mere human comprehension, but I am questioning whether the use of a front/rear/tail light marker LED bulb would have any effect on the cruise control.

I can see the stop/brake light bulb having an effect but the marker/tail?

I don't think the lighting circuit is involved with the cruise since it can be engaged without the lights but I've been wrong many times before.
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