Dwoloz --
I ran a setup like that for a while and I want to warn you about two problems I had. One was that the light has no shielding toward the back and enough light escapes to be annoying. The other is that the brass tabs eventually fatigued and the light fell off.
What I graduated to was a tractor light housing that I got from JC Whitney (it's in an earlier posting). It cost about $10 and solves both problems.
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