I've have some trouble with my wifes 1990 240 sedan's brake lights.
Seems like I just replaced the brake light switch about 3 years ago, so that should be good. They are pain in the arse to install as you all well know.

Presently the center brake light in the rear window works fine but neither of the tail lights work. Yes, I checked the bulbs the the 'plug in' conection at the drivers side tail light. Still the same.

I took the that big red 'bulb integrety sensor' from my 1990 245 wagon and installed it on her car, still no brake lights on her 240 sedan.

So again, the brake light in the rear window works fine but not at the tail lights. Any ideas?

Thanks for the help, Duck