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Old 11-25-2010, 07:51 PM
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Join Date: Aug 2010
Posts: 25
Smile Trouble with my stoplight ( Electrical ) w124 1995 E420

Hello everyone, so im having trouble with my left rear stop light. Everytime I turn on the lights at night and stop the all the lights go out on the left rear tail light, when I release the brake, the lights go back on. In other words my stop light in the left tail light does not work. Check the pictures I have provided out. If someone has any tips, I would truly appreciate it. Thank you.

This picture #1 is when the lights are all off.

This picture #2 is when I step on the brakes when All the lights are off.

Picture #3 is when I turn on the night lights.

Picture #4 is when I step on the brake with the lights on.

Picture #5 , now notice how the brake light bulb dimms a little when I turn on the lights. I notice that when the lights are off, this bulb that is suppouse to be for the brake light never turns on, instead the one that turns on is the one next to it. What can be wrong, Thanks for all your advice.

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Old 11-26-2010, 01:03 AM
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Join Date: Sep 2001
Posts: 1,446
Check for bad ground connection

Had a similar problem on the left side of a 124, our lights were not going out, but the left side would dim. The problem was the ground connection in the metal strip which the bulbs push into. Follow the brown wire in that metal strip, and you will see that it is simply pinched in a groove. We removed that metal strip by cutting off two black plastic tabs that retained it and then squeezed the metal bar tighter, pinching the wire tighter and reinstalled the metal strip, solving the problem. You should reglue the tabs when reinstalling the strip. Hope this works for you.
Does a Caddy stretch? No, but a Mercedes bendz.

Last edited by Sugar Bear; 11-26-2010 at 01:13 AM. Reason: typo & add'l info
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Old 11-26-2010, 09:11 PM
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Join Date: Aug 2010
Posts: 25

IT WORKED! Thanks A lot.
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Old 11-26-2010, 09:12 PM
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Join Date: Aug 2010
Posts: 25
BTW you saved me from a ticket, and a non-sense electrical bill. Happy Holidays.

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