[W126 Coupe] dim passenger light

[calvin young]

Alternator and battery tested good . I tested the voltages at each light.  
Something is dramatically wrong at the passenger light (right hand light?).

Voltages are:

                left hand    right hand
  
white         12.50          0.23
yellow         0.53          5.50
brown         0.23           5.55

next step is to run the wires from the driver side to the passenger side just to make sure the rh light works correctly.
The question, what happened to make so dramatic a change.

voltages at the fuse seem to be correct.  They are:

F2 high beam right 14.01
F4 high beam left   14.02
F6 low beam right    0.53
F8 low beam left      0.56

Other key differences are:
1. fog lights are wired into the high beam switch and do appear to have a separate switch.
2. wire color to right hand and left hand lights are the same, not different as in the diagram.
3. ground wirs are going back toward the fus box/firewall, and are not tied to ground at c142 as shown on diagram.
4.  I am sure there are other differences to come.

This diagram is helpful, but an accurate diagram would be useful.

Cal
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.pairlist.net/pipermail/mbcoupes/attachments/20110303/360d32d1/attachment.htm>