Remember the movie Gremlins? "Bright light! Bright light!" That's the way I felt after riding in Trasborg's '94 Wrangler. You see, he's converted the dashboard over to a flat CJ kind of dash. During the day, it's fine. But at night, the shift light, check-engine light, and any of the other 300-watt lights he has in there is just blinding.
After making fun of him on a 30-minute ride for the blink-blink-blink-blink that lit up the inside of the Jeep every time the Jeep thought it needed to shift, he exploded with (in his best New Jersey accent), "I need the f-ing lights! You got a better idea for them?!"
At the time, I didn't. But after playing around with a pile of old electrical parts, I figured it out: use a relay and a resistor. According to Trasborg, some lights are switched positive and some are switched dirt (Editor's note: ground). So use two relays and two resistors.
If the resistor (Editor's note: 50-ohm resistor-Radio Shack, PN 271-133) goes inline with the light when it's dark, then the light will be dimmer. I explained this to Trasborg, and he came up with the way to wire it below.