Originally Posted by
ratdog
I like this, but it probably won't work on the OP's road bike.
It wouldn't, but
this would and is very similar.
That said, I looked at my bike more carefully -- I've got about 1.25" of spacers beneath the stem, which is 1.5" tall. If I can find a stem that's about 6" long and 1" tall, I should be able to make this work beautifully for less money than the lamp holder.
We'll see.