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13:th-Jan-2019, 18:28:16
As said above, usually only the front drls come on, no rear lights
the normal drl bulbs are twin filament (one for drl, one for sidelight)
if you have a faulty bulb fitted, it's possible that it is backfeeding power into the sidelight circuit - which will make the rear bulb light up.
(its a bit like when a bad earth makes all the rear lights flash with the indicators)
If it was mine I'd try the original drl bulbs as a help to diagnosis
the normal drl bulbs are twin filament (one for drl, one for sidelight)
if you have a faulty bulb fitted, it's possible that it is backfeeding power into the sidelight circuit - which will make the rear bulb light up.
(its a bit like when a bad earth makes all the rear lights flash with the indicators)
If it was mine I'd try the original drl bulbs as a help to diagnosis
retrofitted = DAB+, GM dog guard, GM reversing camera