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Old 06-17-2020, 09:06 PM
Usaguy Usaguy is offline
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Join Date: Aug 2019
Posts: 949
Quote:
Originally Posted by Das_Boost View Post
...The passenger (right) side tail light & front corner marker light will not illuminate.

The specifics:
The flasher on front (same bulb as corner light) works. Brake light, reverse light, and turn signal on rear all work.
Ok good info so let's diagnose it.

Wiring diagram for lights on your car:
http://www.w124-zone.com/downloads/MB%20CD/W124/w124CD1/Program/ETM/24821300.pdf


1. tail light

How the power goes:

N7 -> E4x1 connector -> tail lamp -> E4x1 -> W7 ground

I think we can eliminate a bad ground since all other lights work.

Find connector E4x1 (should be behind the passenger side trunk panel)

Disconnect the connector and find terminal number 6

With a multimeter put one probe to ground and the other probe in terminal 6 check if you're getting voltage.

This way we will narrow down to where the problem is.


2. Front marker light

Because your flasher works then we can say that the ground point W10 is good.

Disconnect the right side turn signal/marker light connector.

With a multimeter put one probe to ground and the other probe in terminal 4 check if you're getting voltage.

Terminal 4 goes straight from the N7 relay.


do these 2 tests and then we can diagnose it further.
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