W209 electrics problem

[Chiefgroover]

There is something weird going on with my car.
Sometimes i start the car, in the dark i notice the dash lights dim and brighten in a pulsating manner. One evening while driving the whole electrics went funny, the airbag light came on, lights flashed on the steering wheel etc. Recently one morning the electric windows would not go down while driving, however when i parked and switched the engine off they worked fine?
Anyone know whats going on?

 

[television]

A small dry joint or bad connection,, not an easy one.

You could remove the kick panel and tap around to see if you can make it better or worse

 

[Ellsy Tanners]

Check the earth point under the drivers side front carpet, it could be the link to all your problems.