First, run your wires. You should have a box that your dimmer will mount to. This box should have the cable that goes to your fan as the "out" line, and the cable that goes to power as your "in" line (make sure the breaker for this is OFF).
Inside the box, crimp the ground wires (bare copper or green wire) together, leaving enough wire to connect to the box or to the ground lug on the dimmer (grounding the box). Next, connect the neutral wires (white) together using an electrical twist nut. The hot wires (black) connect to the dimmer. Put all the covers back on and turn the breaker ON. Test. Done!
Member of the Month: Aug 2011 - Nug of the Month: Oct 2011
Chrystal, if you mention my grow journal, the guys at Advanced will do free shipping. I think you will be very happy with those lights. Also check out Surfinstoned's journal, that girl is putting me to shame this month.