Bulb Failure Warning Light

300 SE W126 - my problem isn't that the bulb failure light isn't working... it is my offside (RH) front parking light that is the problem. The parking light bulb hadn't blown, nor had the fuse (which
was also not corroded) it seems there's an open circuit. I jumped a feed across from the nearside (LH) front for now.
This means that the bulb failure light is on all the time the lights are on (this is very annoying). How is the best way of finding where the open circuit is?
300 Essie
--
1994 Mercedes E280 [W124] 99,000 miles (R.I.P)
1992 Mercedes 300 SE [W126] 230,000 miles
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wrote:

make sure the bulb in there is the right size, incorrect wattage will cause the warning light to stay on
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Thanks, I have just double checked that. Sadly it's correct (that would have been a nice easy fix). I still suspect an open circuit between the bulb holder and the warning light detection circuit (wherever that may be).
300 Essie
--
1994 Mercedes E280 [W124] 99,000 miles (R.I.P)
1992 Mercedes 300 SE [W126] 230,000 miles
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Take the light panel off the wiring harness... and measure the voltage at the wiring harness... I suspect that the taillight and the side light share one circuit... if two, then I am surprised. You can verify it with the good working side.
If the voltage is present and same on both side, then you know it is that light bulb panel is at fault... If your good side fits on the wire harness of the bad side, then try it... and if that side light comes on... then you definitely know it is the light bulb panel that is broken...
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