wow great ideas everyone...tone i tried not using a cap and it really dimmed the headlights really bad...thats only a 1.2 farad cap so its not huge...yea the plans are to put some leds in there to light it up a little bit so i can see it better at night. i just dont want it to be too distracting at night in the back window. i have already found that i can see the cap glowing in my rear view...yea my boss was saying the same thing as you though, that i needed to hide it because it was kinda ugly.
and biju, yea im working on getting 2 computer fans on it right now. one intake and one exhaust for cooling.