Mysterious brake light out problem
 

Car is a trusty 1997 W202 C230 (fond memories of european delivery pick up this time in 1996... :P )

The right brake light is out.

> No bulb out warning on dash.
> Replaced with 3 different new bulbs (P21W 7506 OEM Sylvanias)
> Replaced right rear bulb holder assembley
> All other bulbs work

What gives? Any hints, ideas where to start?

thanks

Start with basic troubleshooting. Remove the offending lamp. When you step on the brake, is there 12V to ground at the lamp socket? Does the "Lamp Out" light come on with the lamp removed? If yes, then the bulb/lamp assembly is at fault.. If not then something upstream is not providing the correct voltage/current to lamp .
Good Luck, Dan