[W126 Coupe] Lights fixed for the moment

[Chet Hwilka]

Just one other thing and I'm not sure if it's been mentioned or whether it
applies to your car, Calvin.  I had an intermittent fog light and it was a
bad solder joint in the "Exterior Lamp Failure Monitor Unit" (largest black
module in the fuse box).  All the outside light circuits run thru this
module and it monitors the current thru each circuit and if a bulb burns
out, an indicator lights up on the dash.  If I recall, the bad solder joint
caused the fog light to not work, but the dash light didn't indicate a
problem.

Chet