Originally Posted by Matt Brown
I've read in other forums that the ceramic piece can be a problem. I'll check that as well. Thanks!
I should mention that although the bulb socket in mine was corroded and turning to dust, it wasn't tripping any breakers.
The lamp just wouldn't light obviously.
There is also a separate socket inside to light the CMY numbers from the rear. This one is the same type used for running lights on older US cars.