Bulb out light on dash.
Check.
RR brake light out.
Replace
All is OK for a day.
Bulb out light on dash again.
Check.
All working except the side markers for parking, supposed used in Europe for parking on the side of the road.

Any help is apperciated.

Bernie


1987 300 TD

Most likely a bad connection, perhaps on the bulb you replaced or another. Just clean the connections, maybe rough them up with a little sandpaper. There is a little tab that the bulb rests against. By pulling that out a little with some needle nose plyers you put more pressure on the connection. The other possibility is a bad high center brake light in the back window - sometimes overlooked.