89 740GL light problem

[Zyggy]

All of the exterior lights on my wagon are flickering, just slightly you can
hardly notice them the license plate light is the worst. Where should I
start looking. I though it could be the voltage regulator am I close? The
rear left fog light seems to burn out often also the right headlight.
Otherwise the car starts and drive as normal.

any and all help would be greatly appreciated

Thanks Rob
89 740 GL wagon

 

[James Sweet]

All of the exterior lights on my wagon are flickering, just slightly you can
hardly notice them the license plate light is the worst. Where should I
start looking. I though it could be the voltage regulator am I close? The
rear left fog light seems to burn out often also the right headlight.
Otherwise the car starts and drive as normal.

any and all help would be greatly appreciated

Thanks Rob
89 740 GL wagon

Does the speed of the flickering vary if you rev the engine slightly? If so
then yes it's probably the voltage regulator, I had that same problem with
mine shortly before it failed.