Brake light out??
 

One of my passenger side brake lights is not lighting up. I tried to change it, but still no luck w/it. I've searched, but didn't find anything. Assuming this is not too common of a problem.

Have more or less the same problem with mine, although it will occasionally flicker on, so the bulb's good. I may get a chance to fool around with it this evening---if I discover anything that might be "enlightening" (pun intended) on the problem, I'll let you know.

Was your bulb OK?

Do you happen to have a voltometer? If you do, a good first bet would be to make sure you have a decent ground connection to the socket. Even a little corrosion in the socket can block the connection.

I haven't fiddled yet with my boxster's rear light bulbs, so I don't know, but if it's a multi-filament bulb and the running light works, it's probably not the ground. If it's not, my next move would be to use the tester with a proven ground and scrape the probe hard against the hot feed while someone presses on the brake and see if I get current.

Most of the time I have found the problem lies in the socket connections and not in the vehicle wiring.

If you don't have access to a voltometer, let me know and I'll tell you an inexpensive workaround to test your connections.

I had the same problem, Its the Metal curcuit that is soldered to the socket, It pops off and there no connection, Look at the metal curcuit that is pushed into the plastic frame next to that brake light socket, Im sure you will see there the connection has broken right there... Just push it down for now and go buy some Soldering equipment to fix it yourself.

This same thing happened to me... and it turned out I was putting the brake light where the (right-hand drive) FOG LIGHT goes.

to be honest i've been looking for a reason to replace the tail lights w/the red/clear ones to complete my deambering. Now, maybe i can rationalize it lol ;)