Installing tach, need wiring help

[TheDrumAndTheBass]

Well, I finally got around to installing my tach last weekend, and am now getting ready to wire everything up. It has four wires, (red, white : power & light, black : ground, and green :ignition module) I know where to hook the green and black ones too. But I'd like to run the red and white wires together so that it comes on (light also) whenever the cars running, By light I dont mean a shift light, just the little bulb that lights it up at night. I was wondering where to run those, if I should wire them into the fuse box, or into one of the ignition wires. Any help will be appricated.Ryan

[TheDrumAndTheBass]

O yeah, and in case anyone is interrested, heres a picture of the tach. It sucks pretty bad cause i just scanned the face of it, but it lets you get the general idea.